1.From the data given below state which group is more variable, A or B?
The group having a higher coefficient of variation will be more variable.
Let the assumed mean, A = 45 and h = 10
For Group A
=N = 150
We know, Variance,
We know, Standard Deviation =
Coefficient of variation =
For Group B
Since C.V.(B) > C.V.(A)
Therefore, Group B is more variable.
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