Q. 14.3( 22 Votes )

In the formula for finding the mean of grouped data di’s are deviation from a of
A. lower limits of the classes

B. upper limits of the classes

C. mid - points of the classes

D. frequencies of the class marks

Answer :

We know that, di = xi - a


xi are data and “a” is the assumed mean

i.e. di are the deviations from of mid - points of the classes.

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