Table:
0
A
B
C
D
E
F
G
1
Poll source
Dates administered
Tom Emmer (R)
Matt Entenza (DFL)
Tom Horner (I)
Undecided
Sampling error
2
Survey USA
August 2-4, 2010
33%
38%
12%
17%
2.7%
3
Minnesota Poll
July 26-29, 2010
31%
36%
15%
17%
4.3%
4
Rasmussen Reports
July 19, 2010
36%
37%
12%
15%
4.5%
5
Survey USA
June 14-16, 2010
37%
33%
12%
18%
2.5%
6
Decision Resources, Ltd.
May 28 - June 2, 2010
27%
34%
19%
20%
3.5%
7
Rasmussen Reports
May 24, 2010
37%
34%
12%
17%
4.5%
8
Humphrey Institute / MPR
May 13-16, 2010
32%
28%
11%
29%
5.8%
9
Survey USA
May 3-5, 2010
42%
31%
10%
16%
4.1%

Questions and formulas:
Question: What percentage voted for Tom Horner according to the poll source with sampling error of 2.5%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="2.5%"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,G2:G9="2.5%"),5))
Level: medium
Question: What's the percentage of undecided according to the poll source with sampling error of 2.7%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="2.7%"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,G2:G9="2.7%"),6))
Level: medium
Question: When did Minnesota Poll administer their poll?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,A1="Minnesota Poll"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,A2:A9="Minnesota Poll"),2))
Level: medium
Question: How many polls show different percentages for Tom Emmer and 38% for Matt Entenza?
Formula: ROWS(UNIQUE(FILTER(C1, D1="38%")))
Formula2: ROWS(UNIQUE(FILTER(C2:C9, D2:D9="38%")))
Level: medium
Question: What poll source administered their poll on June 14-16, 2010?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,B1="June 14-16, 2010"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,B2:B9="June 14-16, 2010"),1))
Level: medium
Question: What's the percentage of votes for Tom Horner according to the poll source that claimed 31% for Matt Entenza?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,D1="31%"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,D2:D9="31%"),5))
Level: medium