Multiple choice

Which of the following assertions are CORRECT?P : Adding 7 to each entry in a lists adds 7 to the mean of the list Q : Adding 7 to each entry in a lists adds 7 to the standard deviation of the listR : 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

  1. P,Q

  2. Q,R

  3. P,R

  4. R,S
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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