Table:
0
A
B
C
D
E
1
Poll source
Dates administered
Joe Miller (R)
Lisa Murkowski (R) write-in candidate *
Scott McAdams (D)
2
Public Policy Polling
October 30–31, 2010
37%
30%
30%
3
CNN/Time/Opinion Research
October 15–19, 2010
37%
37%
23%
4
Public Policy Polling
October 9–10, 2010
35%
33%
26%
5
CNN/Time/Opinion Research
September 24–28, 2010
38%
36%
22%
6
Moore Research
September 23–27, 2010
43%
18%
28%

Questions and formulas:
Question: When 23% scott mcadams (d) what are the dates administered?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="23%"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="23%"),2))
Level: medium
Question: When 30% is scott mcadams (d) percentage how many poll sources are there?
Formula: ROWS(UNIQUE(FILTER(A1, E1="30%")))
Formula2: ROWS(UNIQUE(FILTER(A2:A6, E2:E6="30%")))
Level: medium