Question

The mean of a 20 observations is 24. Find the mean of the new data set obtained by:
(a) Adding 5 to each observation of the original data set.
(b) Subtracting 3 from each observation of the original data set.
(c) Multiplying each observation of the original data set by 3.
(d) Dividing each observation of the original data set by 4.
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Answer 1

Answer:

(a) 24+5 = 29

(b) 24-3 = 21

(c) 24×3 = 72

(d) 24/4 = 6