Q. 44.0( 39 Votes )

Find the mean and variance for each of the data in Exercise.

Answer :

Presenting the data in the tabular form, we get

We know that Mean,

Where N =

We know that Variance, σ2 =

σ2 = (1/40) × 1736 = 43.4

Ans. Mean = 19 and Variance = 43.4

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