The marks (out of 10) obtained by four students are 6, 7, 8 and 9

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

Problem

The marks (out of 10) obtained by four students are 6, 7, 8 and 9. What is the population variance of these marks? (a)

1.667

(b)

1.118

(c)

1.25

(d)

5.00