Question

formula to find mean using short cut method
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Answer 1

Find the mean by using short-cut method.

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Prepare a frequency table.

Choose A and take deviations d. i = x i - A of the values of x i .

Multiply f i d i and find the sum of it.

Use the above formula and find the mean.

Answer 2

Explanation:

sum of the given values /no of values