Score (x) 0 1 2 3 4 5 6 Freq (f) 5 7 3 7 11 6 7 Find the variance

Score (x) 0 1 2 3 4 5 6
Freq (f) 5 7 3 7 11 6 7
Find the variance
A. 42
B. 20
C. 70
D. 54

Correct Option: Answer is A

Solution:
= ∑▒(f(x-x))/f = (170.88)/46 = 3.72

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