Math, asked by khushirai33, 11 months ago

explain the step deviation method used to find the mean

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Answered by Anonymous

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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 become

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.

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