Table:
0
A
B
C
D
E
F
1
Polling Firm
Polling Dates
Bob Chiarelli
Alex Munter
Larry O'Brien
Terry Kilrea (dropped out)
2
Decima
7–9 November 2006
11%
32%
37%
—
3
UniMarketing
2–7 November 2006
20%
34%
25%
—
4
Strategic Counsel
1–4 November 2006
17%
29%
27%
—
5
Holinshed
31 October - 1 November 2006
22%
28%
24%
—
6
UniMarketing
13 October 2006 - 18 October 2006
23%
31%
21%
—
7
Holinshed
14 October 2006 – 15 October 2006
21%
30%
26%
—
8
Leger Marketing
29 September 2006 – 8 October 2006
32%^
37%^
31%^
—
9
Holinshed
25 September 2006 – 27 September 2006
28.1%
27.5%
22.3%
—
10
Decima
18 September 2006 – 25 September 2006
24%
25%
20%
—
11
Holinshed
1 September 2006 *
22.5%
24.2%
18%
—
12
Holinshed
28 July 2006 *
20%
25%
6.8%
14%
13
Decima
23 June 2006 – 26 June 2006
20%
22%
—
12%
14
Decima
24 February 2006 – 4 March 2006
20%
27%
—
14%
15
Decima
30 April 2005 *
27%^
28%^
—
14%^

Questions and formulas:
Question: What are the polling dates when Larry O'Brien has 37%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="37%"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F15,E2:E15="37%"),2))
Level: medium
Question: What dates and firm does Larry O'Brien have 18% when Terry Kilrea dropped out?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,E1="18%"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F15,E2:E15="18%"),6))
Level: medium
Question: What dates does Alex Munter have 25% and the polling firm of Decima?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(D1="25%")*(A1="decima")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F15,(D2:D15="25%")*(A2:A15="decima")),2))
Level: medium
Question: What are the Decima polling dates when Larry O'Brien has 37%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(A1="decima")*(E1="37%")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F15,(A2:A15="decima")*(E2:E15="37%")),2))
Level: medium
Question: What are the polling dates for polling firm Holinshed when Terry Kilrea dropped out and Bob Chiarelli has 22.5%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(A1="holinshed")*(C1="22.5%")),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F15,(A2:A15="holinshed")*(C2:C15="22.5%")),6))
Level: medium