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Question

# What are the advantages of squaring a difference for calculating variance and standard deviation?

A
Squaring makes each term positive so that values above the mean do not cancel below the mean.
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B
Squaring adds more weight to the larger differences, and in many cases this extra weight is appropriate since points further from the mean may be more significant.
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C
It complicates the calculations
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D
All are incorrect
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Solution

## The correct options are A Squaring makes each term positive so that values above the mean do not cancel below the mean. B Squaring adds more weight to the larger differences, and in many cases this extra weight is appropriate since points further from the mean may be more significant.Since,σx=√∑(xi−¯x)2NSo, we can say that opion A and B are correct.

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