माध्य से आप क्या समझते हैं ? गुण-दोषों की चर्चा कीजिए।
What do you mean by mean? Describe the merits and dem
Answers
The arithmetic mean is the simplest and most widely used measure of a mean, or average.
(A) Merits:
1. It can be easily calculated; and can be easily understood. It is the reason that it is the most used measure of central tendency.
2. As every item is taken in calculation, it is effected by every item.
3. As the mathematical formula is rigid one, therefore the result remains the same
(B) Demerits:
1. It cannot be located graphically.
2. A single item can bring big change in the result. For example if there are three terms 4, 7, 10 ; X is 7 in this case. If we add a new term 95, the new X is 4+7+10+95/4 = 116/4 = 29. This is a big change as compared to the size of first three terms’ X- .
3. Its value will be effective only if the frequency is normally distributed. Otherwise in case skewness is more, the results become ineffective.
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