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
(A) $P, Q$
(B) $\mathrm{Q}, \mathrm{R}$
(C) $\mathrm{P}, \mathrm{R}$
(D) $\mathrm{R}, \mathrm{S}$

Question ID - 155813 | SaraNextGen Top Answer

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
(A) $P, Q$
(B) $\mathrm{Q}, \mathrm{R}$
(C) $\mathrm{P}, \mathrm{R}$
(D) $\mathrm{R}, \mathrm{S}$