1.

What is meant by standard deviation? What are its main merits or characteristics?

Answer»

Solution :Standard DEVIATION is the SQUARE ROOT of the arithmetic MEAN of the SQUARES of all deviations. Devations being measured from the arithmetic mean of the items.
Merits :-
1. Based on all values.
2. A certain measure.
3. Little effect of a change in sample.
4. Algebraic Treatment.


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