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In a small village the sample of ages of 8 persons are given below as 26, 21, 8, 20, 16, 3, 22, 28 Find

In a small village the sample of ages of 8 persons are given below as 26, 21, 8, 20, 16, 3, 22, 28 Find the co-efficient of variation from the above sample. Also find the z-score and percentile rank for 21. What would be the Q in this case.

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