Table:
0
A
B
C
D
E
1
Year
Entrant
Chassis
Engine
Points
2
1953
HW Motors
HWM 53
Alta
0
3
1953
Connaught Engineering
Connaught Type A
Lea Francis
0
4
1955
Connaught Engineering
Connaught Type B
Alta
0
5
1956
Connaught Engineering
Connaught Type B
Alta
5
6
1957
Owen Racing Organisation
BRM P25
BRM
0
7
1958
BC Ecclestone
Connaught Type B
Alta
0
8
1958
Cooper Car Company
Cooper T45
Coventry Climax
0
9
1959
High Efficiency Motors
Cooper T45
Coventry Climax
0
10
1959
High Efficiency Motors
Cooper T45
Maserati
0
11
1960
CT Atkins
Cooper T51
Coventry Climax
0
12
1961
Rob Walker Racing
Ferguson P99
Coventry Climax
0
13
1961
Fred Tuck Cars
Cooper T45
Coventry Climax
0

Questions and formulas:
Question: How many points did Connaught Type A chassis earn on average before 1955?
Formula: SUM(FILTER(E1, (A1<1955)*(C1="connaught type a")))
Formula2: SUM(FILTER(E2:E13, (A2:A13<1955)*(C2:C13="connaught type a")))
Level: easy