Let X be a real-valued random variable with E[X] and E[X 2 ] denoting the mean values of X and X 2 , respectively. The relation which always holds is

Correct Answer is : E(X2) ≥ (E[X])2

GATE Electronics and Communications (EC) 2014 Shift 1 Solved Paper

Question : 59 of 65

Marks: +1, -0

Let X be a real-valued random variable with E[X] and E[X²] denoting the mean values of X and X², respectively. The relation which always holds is

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