PA DEP TENORM Study Report – Appendix G Rev. 0 

January 2015

APPENDIX G 

T-TEST OUTPUT FILES 
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

11535 849 6.474 0.000

Variance of Sample 2 377715

Test of Equality of Variances

Variance of Sample 1 2445469

Pooled SD 1517.798

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 1821.7 24.366 1.646 0.000

Pooled (Equal Variance) 12384 11.572 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1564 614.6

SE of Mean 14.56 21.08

Mean 11759 11135

Median 11456 11050

Minimum 4106 9766

Maximum 17778 13268

Number of Valid Observations 11536 850

Number of Distinct Observations 4533 691

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-01

Sample 2 Data: BR-02

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_Farmview.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 10:52:03 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

2905 2388 1.202 0.000

Variance of Sample 2 2098981

Test of Equality of Variances

Variance of Sample 1 2522583

Pooled SD 1526.915

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 5236.1 3.462 1.645 0.000

Pooled (Equal Variance) 5293 3.431 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1588 1449

SE of Mean 29.46 29.64

Mean 12655 12511

Median 13022 12843

Minimum 7892 7975

Maximum 16512 15641

Number of Valid Observations 2906 2389

Number of Distinct Observations 2288 1860

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-04

Sample 2 Data: BR-07

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_Hig.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:45:34 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

2388 1386 3.922 0.000

Variance of Sample 2 2098981

Test of Equality of Variances

Variance of Sample 1 535230

Pooled SD 1234.785

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 3712.4 25.309 1.645 0.000

Pooled (Equal Variance) 3774 21.591 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 731.6 1449

SE of Mean 19.64 29.64

Mean 13411 12511

Median 13431 12843

Minimum 10936 7975

Maximum 16067 15641

Number of Valid Observations 1387 2389

Number of Distinct Observations 1073 1860

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-05

Sample 2 Data: BR-07

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_saxes.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:46:59 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

2388 1451 3.284 0.000

Variance of Sample 2 2098981

Test of Equality of Variances

Variance of Sample 1 639154

Pooled SD 1243.873

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 3807.4 23.461 1.645 0.000

Pooled (Equal Variance) 3839 20.584 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 799.5 1449

SE of Mean 20.98 29.64

Mean 13363 12511

Median 13430 12843

Minimum 9875 7975

Maximum 15757 15641

Number of Valid Observations 1452 2389

Number of Distinct Observations 1140 1860

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-06

Sample 2 Data: BR-07

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_Dut.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:43:29 AM
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Conclusion with Alpha = 0.05

 Two variances appear to be equal

Numerator DF Denominator DF F-Test Value P-Value

221 5589 1.129 0.194

Variance of Sample 2 541763

Test of Equality of Variances

Variance of Sample 1 480066

Pooled SD 694.560

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 236.8 0.602 1.651 0.274

Pooled (Equal Variance) 5810 0.636 1.645 0.262

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 692.9 736

SE of Mean 9.267 49.4

Mean 11990 11960

Median 11988 11998

Minimum 9771 10313

Maximum 14234 13565

Number of Valid Observations 5590 222

Number of Distinct Observations 2387 214

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-08

Sample 2 Data: BR-09

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_Westgate.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:53:21 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

9252 595 2.839 0.000

Variance of Sample 2 349106

Test of Equality of Variances

Variance of Sample 1 991059

Pooled SD 975.843

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 830.7 40.635 1.647 0.000

Pooled (Equal Variance) 9847 25.936 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 995.5 590.9

SE of Mean 10.35 24.2

Mean 11968 10898

Median 11977 10882

Minimum 5888 9449

Maximum 15179 12762

Number of Valid Observations 9253 596

Number of Distinct Observations 3326 504

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-10

Sample 2 Data: BR-11

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_Spencer.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:51:06 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

4643 960 1.921 0.000

Variance of Sample 2 417094

Test of Equality of Variances

Variance of Sample 1 801263

Pooled SD 857.578

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 1815.6 -86.756 1.646 1.000

Pooled (Equal Variance) 5603 -70.304 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 895.1 645.8

SE of Mean 13.14 20.83

Mean 9136 11273

Median 9121 11311

Minimum 6114 9526

Maximum 12050 13180

Number of Valid Observations 4644 961

Number of Distinct Observations 2532 793

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-12

Sample 2 Data: BR-13

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_Wildcat.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:49:12 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

1358 5394 1.148 0.001

Variance of Sample 2 1271858

Test of Equality of Variances

Variance of Sample 1 1108213

Pooled SD 1068.235

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 1995.4 -3.383 1.646 1.000

Pooled (Equal Variance) 6752 -3.525 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1053 1128

SE of Mean 14.33 30.59

Mean 10759 10873

Median 10861 10816

Minimum 2032 7695

Maximum 14053 14509

Number of Valid Observations 5395 1359

Number of Distinct Observations 2811 1151

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-15

Sample 2 Data: BR-14

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_blake.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:54:41 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

4387 591 2.721 0.000

Variance of Sample 2 212790

Test of Equality of Variances

Variance of Sample 1 579070

Pooled SD 731.836

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 1084.9 42.445 1.646 0.000

Pooled (Equal Variance) 4978 29.364 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 761 461.3

SE of Mean 11.49 18.96

Mean 11555 10614

Median 11586 10587

Minimum 9100 9470

Maximum 13870 12360

Number of Valid Observations 4388 592

Number of Distinct Observations 2285 498

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-17

Sample 2 Data: BR-16

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_Swede.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:56:29 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

5230 726 2.238 0.000

Variance of Sample 2 378912

Test of Equality of Variances

Variance of Sample 1 848085

Pooled SD 889.323

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 1231.4 75.962 1.646 0.000

Pooled (Equal Variance) 5956 56.411 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 920.9 615.6

SE of Mean 12.73 22.83

Mean 9510 7524

Median 9395 7479

Minimum 6821 6066

Maximum 16990 9949

Number of Valid Observations 5231 727

Number of Distinct Observations 2427 614

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-18

Sample 2 Data: BR-19

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Pro_crippen.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 8:58:12 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

3943 876 2.148 0.000

Variance of Sample 2 807781

Test of Equality of Variances

Variance of Sample 1 1734740

Pooled SD 1251.494

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 1820.2 5.798 1.646 0.000

Pooled (Equal Variance) 4819 4.578 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1317 898.8

SE of Mean 20.97 30.35

Mean 8825 8611

Median 8747 8560

Minimum 5404 6232

Maximum 13511 12463

Number of Valid Observations 3944 877

Number of Distinct Observations 2708 769

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-20

Sample 2 Data: BR-21

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Clark_rd_b.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:17:14 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

703 3374 1.940 0.000

Variance of Sample 2 2710464

Test of Equality of Variances

Variance of Sample 1 1396851

Pooled SD 1274.111

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 860.2 -11.140 1.647 1.000

Pooled (Equal Variance) 4077 -13.780 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1182 1646

SE of Mean 20.34 62.05

Mean 8590 9317

Median 8498 9019

Minimum 5349 5947

Maximum 13217 13126

Number of Valid Observations 3375 704

Number of Distinct Observations 2310 665

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-23

Sample 2 Data: BR-22

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Mckinney_campbell_c.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:21:43 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

703 3374 1.940 0.000

Variance of Sample 2 2710464

Test of Equality of Variances

Variance of Sample 1 1396851

Pooled SD 1274.111

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 860.2 -11.140 1.647 1.000

Pooled (Equal Variance) 4077 -13.780 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1182 1646

SE of Mean 20.34 62.05

Mean 8590 9317

Median 8498 9019

Minimum 5349 5947

Maximum 13217 13126

Number of Valid Observations 3375 704

Number of Distinct Observations 2310 665

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-24

Sample 2 Data: BR-22

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Mckinney_campbell_c.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:23:38 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

1983 342 2.772 0.000

Variance of Sample 2 797172

Test of Equality of Variances

Variance of Sample 1 2210101

Pooled SD 1415.014

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 719.9 -7.585 1.647 1.000

Pooled (Equal Variance) 2325 -5.375 1.646 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1487 892.8

SE of Mean 33.38 48.21

Mean 7781 8226

Median 7436 8254

Minimum 5069 5882

Maximum 13248 11208

Number of Valid Observations 1984 343

Number of Distinct Observations 1608 328

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-25

Sample 2 Data: BR-26

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Roberts_Hill_rd_b.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:26:09 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

3375 578 1.669 0.000

Variance of Sample 2 912904

Test of Equality of Variances

Variance of Sample 1 1523192

Pooled SD 1197.479

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 942.9 -10.702 1.646 1.000

Pooled (Equal Variance) 3953 -8.947 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1234 955.5

SE of Mean 21.24 39.71

Mean 7785 8267

Median 7678 8281

Minimum 4597 5708

Maximum 12475 11333

Number of Valid Observations 3376 579

Number of Distinct Observations 2328 545

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-28

Sample 2 Data: BR-27

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Piper_rd_b.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:27:43 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

2555 758 7.476 0.000

Variance of Sample 2 494907

Test of Equality of Variances

Variance of Sample 1 3700154

Pooled SD 1722.442

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 3192.1 34.159 1.645 0.000

Pooled (Equal Variance) 3313 21.984 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1924 703.5

SE of Mean 38.05 25.54

Mean 9490 7925

Median 9041 7965

Minimum 5309 5687

Maximum 14465 10360

Number of Valid Observations 2556 759

Number of Distinct Observations 2103 655

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-29

Sample 2 Data: BR-30

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Etzel_rd_b.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:29:04 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

7244 1957 1.099 0.010

Variance of Sample 2 1250949

Test of Equality of Variances

Variance of Sample 1 1374541

Pooled SD 1161.143

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 3215.3 -10.161 1.645 1.000

Pooled (Equal Variance) 9201 -9.890 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1172 1118

SE of Mean 13.77 25.28

Mean 9801 10093

Median 9744 10057

Minimum 6200 6527

Maximum 14415 14117

Number of Valid Observations 7245 1958

Number of Distinct Observations 3605 1541

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-31

Sample 2 Data: BR-32

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Allegheny_e.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:39:03 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

1957 2602 2.885 0.000

Variance of Sample 2 1250949

Test of Equality of Variances

Variance of Sample 1 433556

Pooled SD 885.681

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 2959.1 -59.459 1.645 1.000

Pooled (Equal Variance) 4559 -63.691 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 658.4 1118

SE of Mean 12.91 25.28

Mean 8406 10093

Median 8442 10057

Minimum 6030 6527

Maximum 10975 14117

Number of Valid Observations 2603 1958

Number of Distinct Observations 1587 1541

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-33

Sample 2 Data: BR-32

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Allegheny_e.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:39:57 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

1957 3346 2.003 0.000

Variance of Sample 2 1250949

Test of Equality of Variances

Variance of Sample 1 624642

Pooled SD 925.080

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 3112.0 -65.515 1.645 1.000

Pooled (Equal Variance) 5303 -71.518 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 790.3 1118

SE of Mean 13.66 25.28

Mean 8211 10093

Median 8276 10057

Minimum 5340 6527

Maximum 11448 14117

Number of Valid Observations 3347 1958

Number of Distinct Observations 1991 1541

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-34

Sample 2 Data: BR-32

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Allegheny_e.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:40:55 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

1957 2185 1.461 0.000

Variance of Sample 2 1250949

Test of Equality of Variances

Variance of Sample 1 855972

Pooled SD 1021.073

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 3809.4 -31.704 1.645 1.000

Pooled (Equal Variance) 4142 -32.033 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 925.2 1118

SE of Mean 19.79 25.28

Mean 9076 10093

Median 9036 10057

Minimum 5972 6527

Maximum 12056 14117

Number of Valid Observations 2186 1958

Number of Distinct Observations 1590 1541

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-35

Sample 2 Data: BR-32

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Allegheny_e.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:41:55 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

974 10256 1.144 0.004

Variance of Sample 2 559612

Test of Equality of Variances

Variance of Sample 1 489004

Pooled SD 703.653

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 1141.8 -17.759 1.646 1.000

Pooled (Equal Variance) 11230 -18.776 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 699.3 748.1

SE of Mean 6.905 23.96

Mean 8059 8502

Median 8069 8566

Minimum 5591 5693

Maximum 11617 10981

Number of Valid Observations 10257 975

Number of Distinct Observations 2917 802

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-37

Sample 2 Data: BR-36

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Warner_rd_b.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:43:27 AM
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Conclusion with Alpha = 0.05

 Two variances appear to be equal

Numerator DF Denominator DF F-Test Value P-Value

405 1123 1.040 0.624

Variance of Sample 2 437624

Test of Equality of Variances

Variance of Sample 1 420889

Pooled SD 652.169

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 704.6 -1.538 1.647 0.938

Pooled (Equal Variance) 1528 -1.552 1.646 0.940

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 648.8 661.5

SE of Mean 19.35 32.83

Mean 7920 7979

Median 7942 8006

Minimum 6124 6105

Maximum 10535 10668

Number of Valid Observations 1124 406

Number of Distinct Observations 899 372

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-39

Sample 2 Data: BR-38

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Snyder_rd_b.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:45:10 AM
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Conclusion with Alpha = 0.05

 Two variances appear to be equal

Numerator DF Denominator DF F-Test Value P-Value

509 3711 1.081 0.231

Variance of Sample 2 461244

Test of Equality of Variances

Variance of Sample 1 426595

Pooled SD 656.334

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

 Welch-Satterthwaite Test: Do Not Reject H0, Conclude Sample 1 <= Sample 2

Welch-Satterthwaite (Unequal Varian 645.1 -3.360 1.647 1.000

Pooled (Equal Variance) 4220 -3.461 1.645 1.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 653.1 679.1

SE of Mean 10.72 30.07

Mean 7866 7974

Median 7883 8001

Minimum 5684 5868

Maximum 11617 10227

Number of Valid Observations 3712 510

Number of Distinct Observations 1933 458

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-40

Sample 2 Data: BR-41

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Stewart_rd_b.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 9:48:08 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

5222 916 9.262 0.000

Variance of Sample 2 333953

Test of Equality of Variances

Variance of Sample 1 3093174

Pooled SD 1637.499

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 4315.6 120.780 1.645 0.000

Pooled (Equal Variance) 6138 63.708 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1759 577.9

SE of Mean 24.34 19.08

Mean 9995 6260

Median 9911 6195

Minimum 5710 5017

Maximum 15498 8437

Number of Valid Observations 5223 917

Number of Distinct Observations 3569 752

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-44

Sample 2 Data: BR-46

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Buffalo TWP UCL.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 10:27:31 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

1398 916 7.017 0.000

Variance of Sample 2 333953

Test of Equality of Variances

Variance of Sample 1 2343289

Pooled SD 1244.142

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 1932.6 105.293 1.646 0.000

Pooled (Equal Variance) 2314 89.945 1.646 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1531 577.9

SE of Mean 40.93 19.08

Mean 11015 6260

Median 11268 6195

Minimum 6376 5017

Maximum 15390 8437

Number of Valid Observations 1399 917

Number of Distinct Observations 1219 752

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-45

Sample 2 Data: BR-46

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Buffalo TWP UCL.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 10:28:42 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

3433 916 2.024 0.000

Variance of Sample 2 333953

Test of Equality of Variances

Variance of Sample 1 675865

Pooled SD 777.078

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 2016.5 42.165 1.646 0.000

Pooled (Equal Variance) 4349 34.574 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 822.1 577.9

SE of Mean 14.03 19.08

Mean 7258 6260

Median 7252 6195

Minimum 5177 5017

Maximum 10560 8437

Number of Valid Observations 3434 917

Number of Distinct Observations 2071 752

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-47

Sample 2 Data: BR-46

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Buffalo TWP UCL.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 10:29:32 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

3151 916 4.594 0.000

Variance of Sample 2 333953

Test of Equality of Variances

Variance of Sample 1 1534298

Pooled SD 1124.254

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 3291.6 59.338 1.645 0.000

Pooled (Equal Variance) 4067 41.035 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1239 577.9

SE of Mean 22.06 19.08

Mean 7991 6260

Median 7868 6195

Minimum 5208 5017

Maximum 12338 8437

Number of Valid Observations 3152 917

Number of Distinct Observations 2256 752

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-48

Sample 2 Data: BR-46

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Buffalo TWP UCL.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 10:30:29 AM
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ABCDEFGH I J K L

Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

2927 916 6.022 0.000

Variance of Sample 2 333953

Test of Equality of Variances

Variance of Sample 1 2011042

Pooled SD 1269.369

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 3610.4 88.353 1.645 0.000

Pooled (Equal Variance) 3843 59.629 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1418 577.9

SE of Mean 26.21 19.08

Mean 9124 6260

Median 8906 6195

Minimum 5523 5017

Maximum 14314 8437

Number of Valid Observations 2928 917

Number of Distinct Observations 2225 752

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-49

Sample 2 Data: BR-46

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Buffalo TWP UCL.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 10:31:45 AM
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Conclusion with Alpha = 0.05

 Two variances are not equal

Numerator DF Denominator DF F-Test Value P-Value

2292 916 3.407 0.000

Variance of Sample 2 333953

Test of Equality of Variances

Variance of Sample 1 1137676

Pooled SD 952.987

Conclusion with Alpha = 0.050

 Student t (Pooled) Test: Reject H0, Conclude Sample 1 > Sample 2

 Welch-Satterthwaite Test: Reject H0, Conclude Sample 1 > Sample 2

Welch-Satterthwaite (Unequal Varian 2935.0 103.387 1.645 0.000

Pooled (Equal Variance) 3208 81.442 1.645 0.000

Method DF Value t (0.05) P-Value

Sample 1 vs Sample 2 Two-Sample t-Test

H0: Mean of Sample 1 - Mean of Sample 2 <= 0

t-Test Critical

SD 1067 577.9

SE of Mean 22.27 19.08

Mean 9292 6260

Median 9315 6195

Minimum 6066 5017

Maximum 12933 8437

Number of Valid Observations 2293 917

Number of Distinct Observations 1723 752

Raw Statistics

Sample 1 Sample 2

Sample 1 Data: BR-50

Sample 2 Data: BR-46

Substantial Difference (S) 0.000

Selected Null Hypothesis Sample 1 Mean <= Sample 2 Mean (Form 1)

Alternative Hypothesis Sample 1 Mean > the Sample 2 Mean

From File Buffalo TWP UCL.xls

Full Precision OFF

Confidence Coefficient 95%

t-Test Sample 1 vs Sample 2 Comparison for Uncensored Full Data Sets without NDs

User Selected Options

Date/Time of Computation 12/22/2014 10:32:38 AM