what is step deviation method?
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Step deviation method is used when the height of class interval is same at every data input.
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Step-deviation Method :When the values of the mid-values Xi in the different classes of a grouped data are large in magnitude, then the computation of the mean x bar becomes quite lengthy so, we use short cut method.
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Step-deviation Method :When the values of the mid-values Xi in the different classes of a grouped data are large in magnitude, then the computation of the mean x bar becomes quite lengthy so, we use short cut method.
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