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Variance and Standard Deviation

The average o...

Question

The average of the sum of squares of the deviation about mean is called ________.

A

variance

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B

absolute deviation

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C

standard deviation

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D

mean deviation

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Solution

The correct option is A variance
Variance is the mean of the squares of the deviations from the mean. Variance is the square of standard deviation. Therefore any unit of a given set is converted into squares at the time of calculating the variance.

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