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Answer» Advantages of Mean Deviation: - Its definition is clear.
- All the observations are used in its computation.
- Its value is less affected by the extreme observations as compared to other measures of dispersion.
- The total variations of the observations from their mean is considered in its computation.
- It is a better measure than range and Quartile deviation.
- It is useful as a measure of dispersion for the study of social sciences.
Disadvantages of Mean Deviation: - Its computation is difficult as compared to the computation of range and Quartile deviation.
- It is not a suitable measure for other algebraic manipulations.
- It is less useful measure for the higher study of Statistics because of its dependence on the absolute value of deviation from the mean.
- It cannot be computed for open-ended frequency distribution.
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