For finding mean by assumed mean method X - a - f - d - fFind the physical representation of a-d and f-

In assumed mean method , x = a + (∑ f × d)/∑ f where , a is the assumed mean d is the deviation from assumed m ...

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For finding mean by assumed mean method

$¯ ¯ ¯ x$ = a + $\frac{(\sum f \times d)}{\sum f}$

Find the physical representation of a,d and f.

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For finding mean by assumed mean method

$¯ ¯ ¯ x$ = $a + \frac{(\sum f \times d)}{\sum f}$

What does $d$ and $f$ indicate in the formula?

While calculating the mean of a given data by the assumed-mean method,the following values were obtained:

A=25, $\sum f_{i} d_{i} = 110, \sum f_{i} = 50.$

Find the mean.

x_{i}

f_{i}

\frac{Σ f}{Σ f |d|}

\frac{Σ d}{Σ f}

\frac{Σ f d}{Σ f}

\frac{Σ f |d|}{Σ f}

In the formula $M e a n = a + \frac{\sum f_{i} d_{i}}{\sum f_{i}}$ , the a stands for assumed mean.

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