The variance of RV \( X \) is calculated using the distribution information. We will calculate \( V(X) \) using \( E(X) \) and \( E(X^2) \).
Data. Suppose we have a random sample of data:
The variance of RV \( X \) is calculated using the distribution information. We will calculate \( V(X) \) using \( E(X) \) and \( E(X^2) \).