Table:
0
A
B
C
D
E
1
Year
Single
Chart
Position
Weeks on chart
2
1977
"Ma Baker"
UK single chart
2
13
3
1977
"Ma Baker"
Norway 's single chart
1
23
4
1977
"Ma Baker"
Dutch Top 40
1
15
5
1977
"Belfast"
UK single chart
8
13
6
1977
"Belfast"
Dutch Top 40
3
11

Questions and formulas:
Question: What is the average weeks of a song with a larger than 3 position after 1977?
Formula: AVERAGE(FILTER(E1, (D1>3)*(A1>1977)))
Formula2: AVERAGE(FILTER(E2:E6, (D2:D6>3)*(A2:A6>1977)))
Level: easy
Question: What is the sum of the weeks on a chart a song with a position less than 1 haas?
Formula: SUM(FILTER(E1, D1<1))
Formula2: SUM(FILTER(E2:E6, D2:D6<1))
Level: easy
Question: What is the earliest year a song with a position less than 1 has?
Formula: MIN(FILTER(A1, D1<1))
Formula2: MIN(FILTER(A2:A6, D2:D6<1))
Level: easy