cumvarp
Syntax
cumvarp(X)
Please see Cumulative Window Functions for the parameter description and windowing logic.
Details
Cumulatively calculate the population variance of X.
Returns
DOUBLE type, with the same data form as X.
Examples
cumvarp(1 2 3 NULL 4);
// output: [ , 0.25, 0.666666666666667, 0.666666666666667, 1.25]m=matrix(1.1 3 5.0 7.5 9.2, 1 4.3 7.1 10.6 13.5);
m;| col1 | col2 |
|---|---|
| 1.1 | 1 |
| 3 | 4.3 |
| 5 | 7.1 |
| 7.5 | 10.6 |
| 9.2 | 13.5 |
cumvarp(m);| col1 | col2 |
|---|---|
| 0 | 0 |
| 0.9025 | 2.7225 |
| 2.5356 | 6.2156 |
| 5.6425 | 12.5025 |
| 8.5944 | 19.612 |
Related function: varp