Calculate the relative variability (coefficient of variance) for
the samples 60.25, 62.38, 65.32, 61.41, and 63.23 of a population

(B)
Mean = (60.25 + 62.38 + 65.32 + 61.41 + 63.23)/5
= 312.59/5
= 62.51
calculate standard deviation
= √( (1/(5 - 1)) * (60.25 - 62.51799)2 + (62.38 - 62.51799)2 +
(65.32 - 62.51799)2 + (61.41 - 62.51799)2 +
(63.23 - 62.51799)2)
= √( (1/4) * (-2.267992 + -0.137989992 + 2.802012 + -
1.107992 + 0.712012))
= √( (1/4) * (5.14377 + 0.01904 + 7.85126 + 1.22764 +
0.50695))
= √ 3.68716 σ = 1.92
calculate coefficient of variance
Coefficient of Variance = (Standard Deviation (σ) / Mean (μ))
= 1.92 / 62.51
= 0.0307