[" Weight of "15" persons is as follows: "],[" Weight "(kg)],[" Find out mean weight,using Direct Method as well as Short-cut Method."]

Weight of 15 persons is as follows: {:("Weight(kg)",20,28,34,39,42,50,53,54,59,64,72,74,74,78,79):} Find out mean weight, using Direct Method as well as Short-cut Method.

Find the mean deviation by short cut method.

Method to calculate Mean by short-cut method

Methods of Estimating Correlation|Direct Method|Short-Cut Method

Methods of Estimating Correlation|Direct Method|Short-Cut Method

Find the mean,variance and standard deviation using short-cut method

Find the mean, variance and standard deviation using short-cut method.