GATE Papers >> Mechanical >> 2012 >> Question No 65

Question No. 65 Mechanical | GATE 2012

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


Answer : (C) P, R


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