A Note In this Chapter, we shall use the symbol M to denote median unless stated

A Note In this Chapter, we shall use the symbol M to denote median unless stated otherwise.Let us now illustrate the steps of the above method in following examples. Example Find the mean deviation about the mean for the following data: , , , , , , , Solution We proceed step-wise and get the following: Step Mean of the given data is Step The deviations of the respective observations from the mean , x i.e., x i – x are – , – , – , – , – , – , – , – , or – , – , , , , – , – , Step The absolute values of the deviations, i.e., i x are , , , , , , , Step The required mean deviation about the mean is