For a given data set, the mean of the deviations is 120140 and the assumed mean is 25. Find the mean.
Find the mean of the following data, using assumed-mean method: Marks100−120120−140140−160160−180180−200Number of students102030155
Find the mean deviation about the mean for the given data.
Q1. 4, 7, 8, 9, 10, 12, 13, 17