alleryStart learning →Every mark gains 3 points. What happens to the mean?
AIt also gains 3 points
BIt is multiplied by 3
CIt stays at its old value
DIt gains 3 times the count
Answer & Solution
Correct answer: A. It also gains 3 points
Adding 3 to every observation increases the total by 3 times the count and the mean by 3.
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