Q. 11 5.0( 2 Votes )

While computing the mean of the grouped data, we Assume that the frequencies are
A. evenly distributed over the classes

B. centred at the class marks of the classes

C. centred at the lower limits of the classes

D. centred at the upper limits of the classes

Answer :

Class marks are the aggregates value of the classes and is given by:

Class mark = (lower limit + upper limit)/2

And the frequencies are Assumed to be centered at the class marks of the classes.

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