@stdlib/stats
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Standard library statistical functions.
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{{alias}}( α, β )
Returns the standard deviation of a beta distribution.
If `α <= 0` or `β <= 0`, the function returns `NaN`.
If `α` or `β` is `NaN`, the function returns `NaN`.
Parameters
----------
α: number
First shape parameter.
β: number
Second shape parameter.
Returns
-------
out: number
Standard deviation.
Examples
--------
> var v = {{alias}}( 1.0, 1.0 )
~0.289
> v = {{alias}}( 4.0, 12.0 )
~0.105
> v = {{alias}}( 8.0, 2.0 )
~0.121
> v = {{alias}}( 1.0, -0.1 )
NaN
> v = {{alias}}( -0.1, 1.0 )
NaN
> v = {{alias}}( 2.0, NaN )
NaN
> v = {{alias}}( NaN, 2.0 )
NaN
See Also
--------