Statisticshard · Past Paper
In a dataset, the mean is 15 and the coefficient of variation is 20%. Find the standard deviation.
A3
B300
C0.75
D5
✓ Correct Answer: A — 3
C.V. = (S.D. / Mean) * 100. 20 = (S.D. / 15) * 100. 20/100 = S.D. / 15. 0.2 * 15 = 3.
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