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प्रश्न
For a distribution, mean = 60, median = 75 and variance = 900. Find Pearsonian coefficient of skewness Skp.
उत्तर
Given, Mean = 60, Median = 75, Variance = 900
∴ S.D. = `sqrt("Variance") = sqrt(900)` = 30
Skp = `(3("Mean"-"Median"))/"S.D."`
= `(3(60 - 75))/30`
= `(3(-15))/30`
= `(-15)/10`
∴ Skp = – 1.5
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