Table:
0
A
B
C
D
E
F
1
District
Incumbent
Party
First elected
Result
Candidates
2
Missouri 1
Clare Magee
Democratic
1948
Re-elected
Clare Magee (D) 54.4% Samuel W. Arnold (R) 45.6%
3
Missouri 2
Morgan M. Moulder
Democratic
1948
Re-elected
Morgan M. Moulder (D) 53.0% Max Schwabe (R) 47.0%
4
Missouri 3
Phil J. Welch
Democratic
1948
Re-elected
Phil J. Welch (D) 51.1% William C. Cole (R) 48.9%
5
Missouri 7
Dewey Short
Republican
1934
Re-elected
Dewey Short (R) 58.7% Daniel J. Leary (D) 41.3%
6
Missouri 9
Clarence Cannon
Democratic
1922
Re-elected
Clarence Cannon (D) 61.4% John H. Fahien (R) 38.6%

Questions and formulas:
Question: How many were first elected when the incumbent was Morgan M. Moulder?
Formula: ROWS(UNIQUE(FILTER(D1, B1="Morgan M. Moulder")))
Formula2: ROWS(UNIQUE(FILTER(D2:D6, B2:B6="Morgan M. Moulder")))
Level: medium
Question: In what year was Phil J. Welch first elected?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Phil J. Welch"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Phil J. Welch"),4))
Level: medium
Question: What party was Dewey Short associated with?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Dewey Short"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Dewey Short"),3))
Level: medium
Question: What party was Dewey Short associated with?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="Dewey Short"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="Dewey Short"),3))
Level: medium
Question: What is the district with Republican party in place?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Republican"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,C2:C6="Republican"),1))
Level: medium