Merits Or Advantages Of Mean Deviation
The main advantages of mean deviation can be highlighted as follows:
1. Simple And Easy
Mean deviation can be computed easily by using simple formula. It can be easily understood.
2. Easy Comparison
Different items of observations can be easily compared with mean deviation.
3. Better Measure
Mean deviation is better than quartile deviation and range because it is based on all the observations of the series.
4. Less Affected
Mean deviation is less affected by the extreme values in the series while comparing to standard deviation.
3. Ignores Negative Signs
5. Rigidly Defined
Mean deviation is rigidly defined. So, it has fixed value.
6. Usefulness
It is very useful in various fields such as economics, commerce, economics etc.
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Demerits Or Disadvantages Of Mean Deviation
The major drawbacks or disadvantages of mean deviation can be highlighted as follows:
The major drawbacks or disadvantages of mean deviation can be highlighted as follows:
1. Difficulty
It becomes difficult to compute mean deviation in case of fractions.
2. Not Applicable
Mean deviation is not applicable for algebraic calculations.
Mean deviation is not a good measure as it ignores negative signs of deviations.
4. Mean deviation cannot be obtained in case of open end class series.
