Question

Write the formula of arithmetic mean by deviation method explain each term

Answer 1

Step-by-step explanation:

Step Deviation Method (Mean)

Step Deviation : Sometimes, during the application of the short-cut method for finding the mean, the deviation d, are divisible by a common number ‘h’ .In this case the di = xi – A is reduced to a great extent as di becomes di / h. So the formula of mean by this is :

Where ui = ( xi – A) / h ; h = class width and N = Σ fi

Finding mean by using this formula is known as the Step Deviation Method