Method to Calculate Mean by direct method

Introduction || Revision OF 9th class Statistics || Simplified methods to calculate Mean || Direct method || Assumed mean method || Step-division method

Method to calculate Mean by short-cut method

Method to calculate Mean by Step-Deviation method

Find the mean by direct method :

Methods Of Calculating Mean|Quiz

Methods Of Calculating Mean|Quiz

Marks ( out of 50) obtaned in Mathematics by 100 students is given in the following table. Find the mean by direct method and step deviation method :

Find the mean using direct method :

Find the mean using direct method :