Five observations 6, 8, 10, 12 and x have mean 10 and variance 8

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

Problem

Five observations 6, 8, 10, 12 and x have mean 10 and variance 8. Determine the value of x. (a)

16

(b)

13

(c)

14

(d)

12