Which of the following assertions are CORRECT? P: Adding 7 to each entry in a

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Which of the following assertions are CORRECT? P: Adding 7 to each entry in a list adds 7 to the mean of the list Q: Adding 7 to each entry in a list adds 7 to the standard deviation of the list R: Doubling each entry in a list doubles the mean of the list S: Doubling each entry in a list leaves the standard deviation of the list unchanged

Options:

A . P, Q

B . Q, R

C . P, R

D . R, S

Answer: Option C

-NA-

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