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Pacific Region_NR_Tests.docx

Author: Abt Associates Inc.

Created: 6/7/12

Updated: 7/5/12

Purpose: This file presents output from SAS code which compares characteristics of respondents to the Pacific regional 316(b) stated

preference survey to survey non-respondents. Tests include the Student T-test, Mann-Whitney U Test (Wilcoxon Test), and ChiSquared Test of Proportions. Results were used in developing model weights.

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Pacific Region - T-test for Age

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The TTEST Procedure

Variable: age

sample N Mean Std Dev Std Err Minimum Maximum

main 293 52.8089 15.7094 0.9178 21.0000 93.0000

nonresponse 77 49.7013 14.2728 1.6265 19.0000 85.0000

Diff (1-2) 3.1076 15.4237 1.9752

sample Method Mean 95% CL Mean Std Dev 95% CL Std Dev

main 52.8089 51.0026 54.6151 15.7094 14.5321 17.0959

nonresponse 49.7013 46.4618 52.9408 14.2728 12.3202 16.9667

Diff (1-2) Pooled 3.1076 -0.7765 6.9917 15.4237 14.3854 16.6248

Diff (1-2) Satterthwaite 3.1076 -0.5876 6.8027

Method Variances DF t Value Pr > |t|

Pooled Equal 368 1.57 0.1165

Satterthwaite Unequal 128.7 1.66 0.0986

Equality of Variances

Method Num DF Den DF F Value Pr > F

Folded F 292 76 1.21 0.3193
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Pacific Region – Mann Whitney U Test (Wilcoxon) for Gender

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The NPAR1WAY Procedure

Wilcoxon Scores (Rank Sums) for Variable gender

Classified by Variable sample

sample N Sum of

Scores

Expected

Under H0

Std Dev

Under H0

Mean

Score

nonresponse 78 15458.50 14586.0 715.003666 198.185897

main 295 54292.50 55165.0 715.003666 184.042373

Average scores were used for ties.

Wilcoxon Two-Sample Test

Statistic 15458.5000

Normal Approximation

Z 1.2196

One-Sided Pr > Z 0.1113

Two-Sided Pr > |Z| 0.2226

t Approximation

One-Sided Pr > Z 0.1117

Two-Sided Pr > |Z| 0.2234

Z includes a continuity correction

of 0.5.

Kruskal-Wallis Test

Chi-Square 1.4891

DF 1

Pr > Chi-Square 0.2224
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Pacific Region – Chi-Squared Test of Proportions for Gender

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The FREQ Procedure

Frequency

Percent

Row Pct

Col Pct

Table of sample by gender

sample gender

male female Total

main 185

49.60

62.71

81.14

110

29.49

37.29

75.86

295

79.09

nonresponse 43

11.53

55.13

18.86

35

9.38

44.87

24.14

78

20.91

Total 228

61.13

145

38.87

373

100.00

Statistics for Table of sample by gender

Statistic DF Value Prob

Chi-Square 1 1.4931 0.2217

Likelihood Ratio Chi-Square 1 1.4760 0.2244

Continuity Adj. Chi-Square 1 1.1910 0.2751

Mantel-Haenszel Chi-Square 1 1.4891 0.2224

Phi Coefficient 0.0633

Contingency Coefficient 0.0631

Cramer's V 0.0633

Fisher's Exact Test

Cell (1,1) Frequency (F) 185

Left-sided Pr <= F 0.9113

Right-sided Pr >= F 0.1378

Table Probability (P) 0.0490

Two-sided Pr <= P 0.2410

Sample Size = 373
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Pacific Region – Mann Whitney U Test (Wilcoxon) for Employment

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The NPAR1WAY Procedure

Wilcoxon Scores (Rank Sums) for Variable employ

Classified by Variable sample

sample N Sum of

Scores

Expected

Under H0

Std Dev

Under H0

Mean

Score

nonresponse 76 13712.0 14098.0 683.505919 180.421053

main 294 54923.0 54537.0 683.505919 186.812925

Average scores were used for ties.

Wilcoxon Two-Sample Test

Statistic 13712.0000

Normal Approximation

Z -0.5640

One-Sided Pr < Z 0.2864

Two-Sided Pr > |Z| 0.5728

t Approximation

One-Sided Pr < Z 0.2865

Two-Sided Pr > |Z| 0.5731

Z includes a continuity correction

of 0.5.

Kruskal-Wallis Test

Chi-Square 0.3189

DF 1

Pr > Chi-Square 0.5723
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Pacific Region – Chi-Squared Test of Proportions for Employment

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The FREQ Procedure

Frequency

Percent

Row Pct

Col Pct

Table of sample by employ

sample employ

employed unemployed Total

main 191

51.62

64.97

78.60

103

27.84

35.03

81.10

294

79.46

nonresponse 52

14.05

68.42

21.40

24

6.49

31.58

18.90

76

20.54

Total 243

65.68

127

34.32

370

100.00

Statistics for Table of sample by employ

Statistic DF Value Prob

Chi-Square 1 0.3198 0.5717

Likelihood Ratio Chi-Square 1 0.3230 0.5698

Continuity Adj. Chi-Square 1 0.1849 0.6672

Mantel-Haenszel Chi-Square 1 0.3189 0.5723

Phi Coefficient -0.0294

Contingency Coefficient 0.0294

Cramer's V -0.0294

Fisher's Exact Test

Cell (1,1) Frequency (F) 191

Left-sided Pr <= F 0.3362

Right-sided Pr >= F 0.7569

Table Probability (P) 0.0931

Two-sided Pr <= P 0.5913

Sample Size = 370
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Pacific Region – Mann Whitney U Test (Wilcoxon) for Hispanic/Latino

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The NPAR1WAY Procedure

Wilcoxon Scores (Rank Sums) for Variable hisp

Classified by Variable sample

sample N Sum of

Scores

Expected

Under H0

Std Dev

Under H0

Mean

Score

nonresponse 75 13867.50 13875.0 484.644648 184.900000

main 294 54397.50 54390.0 484.644648 185.025510

Average scores were used for ties.

Wilcoxon Two-Sample Test

Statistic 13867.5000

Normal Approximation

Z -0.0144

One-Sided Pr < Z 0.4942

Two-Sided Pr > |Z| 0.9885

t Approximation

One-Sided Pr < Z 0.4942

Two-Sided Pr > |Z| 0.9885

Z includes a continuity correction

of 0.5.

Kruskal-Wallis Test

Chi-Square 0.0002

DF 1

Pr > Chi-Square 0.9877
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Pacific Region – Chi-Squared Test of Proportions for Hispanic/Latino

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The FREQ Procedure

Frequency

Percent

Row Pct

Col Pct

Table of sample by hisp

sample hisp

hispanic nothispanic Total

main 39

10.57

13.27

79.59

255

69.11

86.73

79.69

294

79.67

nonresponse 10

2.71

13.33

20.41

65

17.62

86.67

20.31

75

20.33

Total 49

13.28

320

86.72

369

100.00

Statistics for Table of sample by hisp

Statistic DF Value Prob

Chi-Square 1 0.0002 0.9876

Likelihood Ratio Chi-Square 1 0.0002 0.9876

Continuity Adj. Chi-Square 1 0.0000 1.0000

Mantel-Haenszel Chi-Square 1 0.0002 0.9877

Phi Coefficient -0.0008

Contingency Coefficient 0.0008

Cramer's V -0.0008

Fisher's Exact Test

Cell (1,1) Frequency (F) 39

Left-sided Pr <= F 0.5586

Right-sided Pr >= F 0.5919

Table Probability (P) 0.1505

Two-sided Pr <= P 1.0000

Sample Size = 369
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Pacific Region – Mann Whitney U Test (Wilcoxon) for Education

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The NPAR1WAY Procedure

Wilcoxon Scores (Rank Sums) for Variable education

Classified by Variable sample

sample N Sum of

Scores

Expected

Under H0

Std Dev

Under H0

Mean

Score

nonresponse 77 13234.50 14360.50 817.003210 171.876623

main 295 56143.50 55017.50 817.003210 190.316949

Average scores were used for ties.

Wilcoxon Two-Sample Test

Statistic 13234.5000

Normal Approximation

Z -1.3776

One-Sided Pr < Z 0.0842

Two-Sided Pr > |Z| 0.1683

t Approximation

One-Sided Pr < Z 0.0846

Two-Sided Pr > |Z| 0.1692

Z includes a continuity correction

of 0.5.

Kruskal-Wallis Test

Chi-Square 1.8995

DF 1

Pr > Chi-Square 0.1681
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Pacific Region – Chi-Squared Test of Proportions for Education

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The FREQ Procedure

Frequency

Percent

Row Pct

Col Pct

Table of sample by education

sample education

1 2 3 4 5 6 Total

main 5

1.34

1.69

62.50

40

10.75

13.56

78.43

22

5.91

7.46

73.33

78

20.97

26.44

78.79

85

22.85

28.81

79.44

65

17.47

22.03

84.42

295

79.30

nonresponse 3

0.81

3.90

37.50

11

2.96

14.29

21.57

8

2.15

10.39

26.67

21

5.65

27.27

21.21

22

5.91

28.57

20.56

12

3.23

15.58

15.58

77

20.70

Total 8

2.15

51

13.71

30

8.06

99

26.61

107

28.76

77

20.70

372

100.00

Statistics for Table of sample by education

Statistic DF Value Prob

Chi-Square 5 3.2944 0.6547

Likelihood Ratio Chi-Square 5 3.1495 0.6769

Mantel-Haenszel Chi-Square 1 1.9078 0.1672

Phi Coefficient 0.0941

Contingency Coefficient 0.0937

Cramer's V 0.0941

Sample Size = 372
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Pacific Region – Mann Whitney U Test (Wilcoxon) for Importance of Aquatic Ecosystems

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The NPAR1WAY Procedure

Wilcoxon Scores (Rank Sums) for Variable aquatic

Classified by Variable sample

sample N Sum of

Scores

Expected

Under H0

Std Dev

Under H0

Mean

Score

nonresponse 76 14416.50 14174.0 786.807474 189.690789

main 296 54961.50 55204.0 786.807474 185.680743

Average scores were used for ties.

Wilcoxon Two-Sample Test

Statistic 14416.5000

Normal Approximation

Z 0.3076

One-Sided Pr > Z 0.3792

Two-Sided Pr > |Z| 0.7584

t Approximation

One-Sided Pr > Z 0.3793

Two-Sided Pr > |Z| 0.7586

Z includes a continuity correction

of 0.5.

Kruskal-Wallis Test

Chi-Square 0.0950

DF 1

Pr > Chi-Square 0.7579
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Pacific Region – Chi-Squared Test of Proportions for Importance of Aquatic Ecosystems

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The FREQ Procedure

Frequency

Percent

Row Pct

Col Pct

Table of sample by aquatic

sample aquatic

1 2 3 4 5 Total

main 12

3.23

4.05

92.31

23

6.18

7.77

92.00

68

18.28

22.97

80.95

55

14.78

18.58

67.07

138

37.10

46.62

82.14

296

79.57

nonresponse 1

0.27

1.32

7.69

2

0.54

2.63

8.00

16

4.30

21.05

19.05

27

7.26

35.53

32.93

30

8.06

39.47

17.86

76

20.43

Total 13

3.49

25

6.72

84

22.58

82

22.04

168

45.16

372

100.00

Statistics for Table of sample by aquatic

Statistic DF Value Prob

Chi-Square 4 12.3340 0.0150

Likelihood Ratio Chi-Square 4 12.3239 0.0151

Mantel-Haenszel Chi-Square 1 0.8418 0.3589

Phi Coefficient 0.1821

Contingency Coefficient 0.1791

Cramer's V 0.1821

Sample Size = 372
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Pacific Region – Mann Whitney U Test (Wilcoxon) for Income less than 60k

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The FREQ Procedure

Table of sample by income_lt60k

sample income_lt60k

Frequency |

Percent |

Row Pct |

Col Pct | 0| 1| Total

------------+--------+--------+

main | 155 | 116 | 271

| 45.19 | 33.82 | 79.01

| 57.20 | 42.80 |

| 81.15 | 76.32 |

------------+--------+--------+

nonresponse | 36 | 36 | 72

| 10.50 | 10.50 | 20.99

| 50.00 | 50.00 |

| 18.85 | 23.68 |

------------+--------+--------+

Total 191 152 343

55.69 44.31 100.00

Statistics for Table of sample by income_lt60k

Statistic DF Value Prob

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Chi-Square 1 1.1936 0.2746

Likelihood Ratio Chi-Square 1 1.1881 0.2757

Continuity Adj. Chi-Square 1 0.9198 0.3375

Mantel-Haenszel Chi-Square 1 1.1901 0.2753

Phi Coefficient 0.0590

Contingency Coefficient 0.0589

Cramer's V 0.0590

Fisher's Exact Test

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Cell (1,1) Frequency (F) 155

Left-sided Pr <= F 0.8897

Right-sided Pr >= F 0.1687

Table Probability (P) 0.0584

Two-sided Pr <= P 0.2882

Sample Size = 343
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Pacific Region – Chi-Squared Test of Proportions for Income less than 60k

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The FREQ Procedure

Table of sample by income_lt60k

sample income_lt60k

Frequency |

Percent |

Row Pct |

Col Pct | 0| 1| Total

------------+--------+--------+

main | 155 | 116 | 271

| 45.19 | 33.82 | 79.01

| 57.20 | 42.80 |

| 81.15 | 76.32 |

------------+--------+--------+

nonresponse | 36 | 36 | 72

| 10.50 | 10.50 | 20.99

| 50.00 | 50.00 |

| 18.85 | 23.68 |

------------+--------+--------+

Total 191 152 343

55.69 44.31 100.00

Statistics for Table of sample by income_lt60k

Statistic DF Value Prob

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Chi-Square 1 1.1936 0.2746

Likelihood Ratio Chi-Square 1 1.1881 0.2757

Continuity Adj. Chi-Square 1 0.9198 0.3375

Mantel-Haenszel Chi-Square 1 1.1901 0.2753

Phi Coefficient 0.0590

Contingency Coefficient 0.0589

Cramer's V 0.0590

Fisher's Exact Test

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Cell (1,1) Frequency (F) 155

Left-sided Pr <= F 0.8897

Right-sided Pr >= F 0.1687

Table Probability (P) 0.0584

Two-sided Pr <= P 0.2882

Sample Size = 343
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Pacific Region – Mann Whitney U Test (Wilcoxon) for Race (minority)

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The NPAR1WAY Procedure

Wilcoxon Scores (Rank Sums) for Variable race_minor

Classified by Variable sample

sample N Sum of

Scores

Expected

Under H0

Std Dev

Under H0

Mean

Score

nonresponse 70 10937.50 12110.0 518.945221 156.250000

main 275 48747.50 47575.0 518.945221 177.263636

Average scores were used for ties.

Wilcoxon Two-Sample Test

Statistic 10937.5000

Normal Approximation

Z -2.2584

One-Sided Pr < Z 0.0120

Two-Sided Pr > |Z| 0.0239

t Approximation

One-Sided Pr < Z 0.0123

Two-Sided Pr > |Z| 0.0245

Z includes a continuity correction

of 0.5.

Kruskal-Wallis Test

Chi-Square 5.1048

DF 1

Pr > Chi-Square 0.0239
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Pacific Region – Chi-Squared Test of Proportions for Race (minority)

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The FREQ Procedure

Frequency

Percent

Row Pct

Col Pct

Table of sample by race_minor

sample race_minor

minor white Total

main 49

14.20

17.82

70.00

226

65.51

82.18

82.18

275

79.71

nonresponse 21

6.09

30.00

30.00

49

14.20

70.00

17.82

70

20.29

Total 70

20.29

275

79.71

345

100.00

Statistics for Table of sample by race_minor

Statistic DF Value Prob

Chi-Square 1 5.1197 0.0237

Likelihood Ratio Chi-Square 1 4.7673 0.0290

Continuity Adj. Chi-Square 1 4.3942 0.0361

Mantel-Haenszel Chi-Square 1 5.1048 0.0239

Phi Coefficient -0.1218

Contingency Coefficient 0.1209

Cramer's V -0.1218

Fisher's Exact Test

Cell (1,1) Frequency (F) 49

Left-sided Pr <= F 0.0205

Right-sided Pr >= F 0.9907

Table Probability (P) 0.0112

Two-sided Pr <= P 0.0302

Sample Size = 345