The mean and variance of the heights and weights of the students of a class are given below:
Heights | Weights | |
Mean | 63.2 inches | 63.2 kg |
SD | 11.5 inches | 5.6 kg |
Which shows more variability, heights or weights?
In case of heights,
Mean = 63.2 inches and SD = 11.5 inches.
So, the coefficient of variation,
⇒ 
In case of weights,
Mean = 63.2 inches and SD = 5.6 inches.
So, the coefficient of variation,
⇒ 
CV of heights > CV of weights
So, heights show more variability.
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