Mean deviation for ungrouped data or Individual data with some examples

Mean Deviation (Mean deviation for ungrouped data or Individual Responses) Explain with some examples

Mean of Ungrouped data

Raw data or ungrouped data.

Mean deviation from mean of the data is

MEDIAN of an ungrouped data

The mean of the ungrouped data is given by

The coefficient of variation and standard deviation of an ungrouped data are 60 and 21 respectively. If 15 is added to every observation of the data, then the coefficient of variation of the new data is

Find mean deviation about mean for the data ?

Find the mean deviation about the mean for the data in