Question: A discrete random variable y has probability distribution What is the standard deviation of y? yi 0, 1, 2, 3 p(yi) 0.1, 0.1, 0.5, 0.3

A discrete random variable y has probability distribution

What is the standard deviation of y?

yi 0, 1, 2, 3

p(yi) 0.1, 0.1, 0.5, 0.3

A. 0.8

B. 0.9

C. 1

D. 2

E. None of the above

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