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{{alias}}( [mx, my] )
Returns an accumulator function which incrementally computes the squared
sample Pearson product-moment correlation coefficient.
If provided values, the accumulator function returns an updated accumulated
value. If not provided values, the accumulator function returns the current
accumulated value.
If provided `NaN` or a value which, when used in computations, results in
`NaN`, the accumulated value is `NaN` for all future invocations.
Parameters
----------
mx: number (optional)
Known mean.
my: number (optional)
Known mean.
Returns
-------
acc: Function
Accumulator function.
Examples
--------
> var accumulator = {{alias}}();
> var r2 = accumulator()
null
> r2 = accumulator( 2.0, 1.0 )
0.0
> r2 = accumulator( -5.0, 3.14 )
~1.0
> r2 = accumulator()
~1.0
See Also
--------
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