Question

assumed mean is taken in which method​

Answer 1

In statistics the assumed mean is a method for calculating the arithmetic mean and standard deviation of a data set. It simplifies calculating accurate values by hand. Its interest today is chiefly historical but it can be used to quickly estimate these statistics

Answer 2

Answer:

In statistics, the assumed mean method is used for calculating mean or arithmetic mean of a grouped data.

This method depends on estimating the mean and rounding to an easy value to calculate with.