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GATE | GATE CS 2012 | Question 65
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)
Q, R
(C)
P, R
(D)
R, S
Answer
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