@stdlib/stats
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Standard library statistical functions.
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{{alias}}( [a, b] )
Returns a Kumaraswamy's double bounded distribution object.
Parameters
----------
a: number (optional)
First shape parameter. Must be greater than `0`. Default: `1.0`.
b: number (optional)
Second shape parameter. Must be greater than `0`. Default: `1.0`.
Returns
-------
kumaraswamy: Object
Distribution instance.
kumaraswamy.a: number
First shape parameter. If set, the value must be greater than `0`.
kumaraswamy.b: number
Second shape parameter. If set, the value must be greater than `0`.
kumaraswamy.kurtosis: number
Read-only property which returns the excess kurtosis.
kumaraswamy.mean: number
Read-only property which returns the expected value.
kumaraswamy.mode: number
Read-only property which returns the mode.
kumaraswamy.skewness: number
Read-only property which returns the skewness.
kumaraswamy.stdev: number
Read-only property which returns the standard deviation.
kumaraswamy.variance: number
Read-only property which returns the variance.
kumaraswamy.cdf: Function
Evaluates the cumulative distribution function (CDF).
kumaraswamy.pdf: Function
Evaluates the probability density function (PDF).
kumaraswamy.quantile: Function
Evaluates the quantile function at probability `p`.
Examples
--------
> var kumaraswamy = {{alias}}( 6.0, 5.0 );
> kumaraswamy.a
6.0
> kumaraswamy.b
5.0
> kumaraswamy.kurtosis
~3.194
> kumaraswamy.mean
~0.696
> kumaraswamy.mode
~0.746
> kumaraswamy.skewness
~-0.605
> kumaraswamy.stdev
~0.126
> kumaraswamy.variance
~0.016
> kumaraswamy.cdf( 0.8 )
~0.781
> kumaraswamy.pdf( 1.0 )
~0.0
> kumaraswamy.quantile( 0.8 )
~0.807
See Also
--------