1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
{{alias}}( [mean] )
Returns an accumulator function which incrementally computes a corrected
sample standard deviation.
If provided a value, the accumulator function returns an updated corrected
sample standard deviation. If not provided a value, the accumulator function
returns the current corrected sample standard deviation.
If provided `NaN` or a value which, when used in computations, results in
`NaN`, the accumulated value is `NaN` for all future invocations.
Parameters
----------
mean: number (optional)
Known mean.
Returns
-------
acc: Function
Accumulator function.
Examples
--------
> var accumulator = {{alias}}();
> var s = accumulator()
null
> s = accumulator( 2.0 )
0.0
> s = accumulator( -5.0 )
~4.95
> s = accumulator()
~4.95
See Also
--------
|
