Question

if E (X)=5, E(X^2)=35,find variance of X​
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Answer 1

Answer:

10

Step-by-step explanation:

The formula for finding variance is V(x)=E(X^2)-E(X)^2

given V(X)=?,E(X^2)=35 ,E(X)^2=5^2=25

V(X)=35-25

V(X)=10