Q. 25.0( 1 Vote )

# Table below shows the frequency f with which ‘x’ alpha particles were radiated from a diskette

Calculate the mean and variance.

Answer :

**Given,** The data is given in table

**To Find:** Find the mean and variance

**Explanation:** Mean =

Mean =

Now, N=70

**Hence, The mean is 3.88 and variance is 3.63**

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The sum and the sum of squares of length x (in cm) and weight y (in g) of 50 plant products are given below:

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