A question in GATE 2012 Production and Industrial Engineering Paper with Solution has been updated:
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
- R, S
- P, R
- P, Q
- Q, R
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