Question

What is the mean E(X^2) and variance V(X^2) of the random variable X^2

Answer 1

[AI-generated answer — Bot]

The mean E(X^2) is equal to the variance of X, V(X), plus the square of the mean of X, E(X)^2.

The variance V(X^2) is equal to the square of the variance of X, V(X)^2, plus the fourth moment of X, E(X^4).