Q. 45.0( 4 Votes )

# In the formula for finding the mean of grouped frequency distribution is equal to

A.

B.

C.

D.

Answer :

Given,

Above formula is a step deviation (shortcut) formula.

Where x_{i} is data values, a is assumed mean and h is class size, when class size is same we simplify the calculations of the mean by computing the coded mean of u_{1},u_{2},u_{3}…..where

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