If the standard deviation of a probability distribution is 9, then the variance is: a. Unknown....

Question

Question

If the standard deviation of a probability distribution is 9, then the variance is: a. Unknown. b. 9. c. 3. d. 81.

math Statistics-And-Probability

Answer 1

Answer #1

here the standard deviation =81

so variance=(standard deviation)^2

=81

option D is right

Answer 2

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