Package: alexandria

## Function standard-deviation

### Lambda List

standard-deviation (

**sample****&key****biased**)### Arguments

sample -- a sequence

biased -- a boolean

biased -- a boolean

### Return Value

a floating point number

### Details

Standard deviation of a sample.

Returns the biased standard deviation if biased is true (the default), and the square root of the unbiased estimator for variance if biased is false (which is not the same as the unbiased estimator for standard deviation). sample must be a sequence of numbers.

Returns the biased standard deviation if biased is true (the default), and the square root of the unbiased estimator for variance if biased is false (which is not the same as the unbiased estimator for standard deviation). sample must be a sequence of numbers.