Table:
0
A
B
C
D
E
1
No. in series
No. in season
Family/families
Location(s)
Original air date
2
US1
1
The Jeans Family
Denver, CO
1January2005
3
US2
2
The Bullard Family
Aurora, CO
24January2005
4
US3
3
The Orm Family
Santa Clarita, CA
31January2005
5
US4
4
The Wischmeyer Family
Colorado
7February2005
6
US5
5
The Weston Family
Florida
14February2005
7
US6
6
The Bailey Family
N/A
21February2005
8
US7
7
The Gorbea Family
California
28February2005
9
US8
8
The Ririe Family
Thousand Oaks, CA
21March2005
10
US9
9
The Burnett Family
N/A
18April2005

Questions and formulas:
Question: In how many locations was the episode with the Bailey family filmed?
Formula: ROWS(UNIQUE(FILTER(D1, C1="The Bailey Family")))
Formula2: ROWS(UNIQUE(FILTER(D2:D10, C2:C10="The Bailey Family")))
Level: medium
Question: How many episodes with different season numbers had the Jeans family in them?
Formula: SUMIFS(B1,C1,"The Jeans Family")
Formula2: SUMIFS(B2:B10,C2:C10,"The Jeans Family")
Level: easy
Question: When did the episode with the Ririe family air for the first time?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="The Ririe Family"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E10,C2:C10="The Ririe Family"),5))
Level: medium
Question: Where was the episode with series number US9 filmed?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="US9"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E10,A2:A10="US9"),4))
Level: medium
Question: What's the season number of the episode with series number US6?
Formula: SUMIFS(B1,A1,"US6")
Formula2: SUMIFS(B2:B10,A2:A10,"US6")
Level: easy