Table:
0
A
B
C
D
E
1
Poll Source
Dates administered
Democrat: Larry LaRocco
Republican: Jim Risch
Lead Margin
2
Research 2000/Daily Kos
September 16-September 17, 2008
33%
56%
23
3
Rasmussen Reports
September 9, 2008
30%
58%
28
4
Greg Smith & Associates
August 18-August 22, 2008
30%
41%
11
5
Research 2000/Daily Kos
July 28-July 30, 2008
32%
42%
10
6
Lake Research *
May 20-May 25, 2008
28%
43%
15
7
Robinson Research *
November 26-December 12, 2007
27%
46%
19
8
Myers Research *
November 13-November 19, 2007
34%
48%
14
9
Survey USA
September 6-September 8, 2007
36%
52%
16

Questions and formulas:
Question: Name the average Lead Margin on  november 13-november 19, 2007?
Formula: AVERAGEIFS(E1,B1,"november 13-november 19, 2007")
Formula2: AVERAGEIFS(E2:E9,B2:B9,"november 13-november 19, 2007")
Level: easy
Question: Which Poll Source has a Republican Jim Risch of 43%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="43%"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,D2:D9="43%"),1))
Level: medium