Q. 93.8( 19 Votes )

Find the mean, va

Answer :

Let the assumed mean, A = 92.5 and h = 5


We obtain the following table from the given data:



We know that Mean,



We know that Variance σ2 =


σ2 =


We know that Standard Deviation = σ


σ = √105.583 = 10.275


Ans. Mean = 93, Variance = 105.583 and Standard Deviation = 10.275


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