The eight numbers are recorded

MATHEMATICS · Single correct · A Level · Mathematics · Data presentation and interpretation · Data presentation and interpretation

Problem

The eight numbers

3,\,5,\,7,\,8,\,10,\,12,\,14,\,16

are recorded. Find their variance (correct to two decimal places). (a)

19.98

(b)

17.48

(c)

34.97

(d)

15.54