Method to calculate Mean by short-cut method

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 Step-Deviation method

Multiplication by short cut methods

Calculate mean and standard deviation of the following data by short-cut method:

Following are the marks of 37 students: {:("Marks",4,6,8,10,12,14),("No. of Students",5,7,6,8,6,5):} Calculate mean marks, using Short-cut Method.

Find the mean deviation by short cut method.

calculate standard Deviation by the short-cut Method.