Guest Session: 1 Question Remaining. Create Account to save progress.
Login
Descriptive Statisticsmedium
0:00.0

For a dataset, the variance formula can be written as: Var(X)=E[X2]−(E[X])2\text{Var}(X) = E[X^2] - (E[X])^2Var(X)=E[X2]−(E[X])2

If E[X2]=120E[X^2] = 120E[X2]=120 and E[X]=8E[X] = 8E[X]=8, what is the variance?