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

Question

While calculating the mean of a given data by the Assumed - mean method, the following values were obtained: A = 25, = 110, = 50. Find the mean.

Philoid · Accepted Answer

We have got

A = 25, Σf_i = 50 & Σf_id_i = 110

∵ By Assumed - mean method, mean is given by

⇒

Thus, mean is 27.2