Find the mean of the following distribution, by step deviation method.

30.9

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29.6

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40.5

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24.8

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Solution

The correct option is A
30.9

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Find the mean of the following frequency distribution by step-deviation method.

Q. Find the mean of following frequency distribution using step deviation method.

Find the arithmetic mean of the following frequency distribution using step-deviation method:
$\begin{matrix} Age(in years) & 18 - 24 & 24 - 30 & 30 - 36 & 36 - 42 & 42 - 48 & 48 - 54 Number of workers & 6 & 8 & 12 & 8 & 4 & 2 \end{matrix}$

Q. Apply Step-Deviation method to find arithmetic mean (rounded off to nearest integer) of the following frequency distribution.

Using step - deviation method, calculate the mean marks of the following distribution.

$\begin{matrix} C l a s s i n t e r v a l & F r e q u e n c y 50 - 55 & 5 55 - 60 & 20 60 - 65 & 10 65 - 70 & 10 70 - 75 & 9 75 - 80 & 6 80 - 85 & 12 85 - 90 & 8 \end{matrix}$

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Find the mean of the following distribution, by step deviation method.

The correct option is A 30.9

The correct option is A
30.9