29 lines
602 B
Markdown
29 lines
602 B
Markdown
# MathVariance
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Calculates the variance (second moment) of array elements. Analog of the [var()](http://www.r-tutor.com/elementary-statistics/numerical-measures/variance) in R.
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```
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double MathVariance(
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const double& array[] // array with data
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);
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```
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Parameters
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array
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[in] Array with data for calculation.
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start=0
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[in] Initial index for calculation.
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count=WHOLE_ARRAY
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[in] The number of elements for calculation.
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Return Value
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Variance of array elements. In case of error it returns [NaN](/en/docs/basis/types/double) (not a number).
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