varp
Syntax
varp(X)
Arguments
X is a vector/matrix.
Details
If X is a vector, return the population variance of X.
If X is a matrix, ccalculate the population variance of each column and return a vector.
As with all other aggregate functions, NULL values are ignored in the calculation.
Examples
varp(1 1 1);
// output
0
varp(1 2 3);
// output
0.666667
m=matrix(1 3 5 7 9, 1 4 7 10 13);
m;| #0 | #1 |
|---|---|
| 1 | 1 |
| 3 | 4 |
| 5 | 7 |
| 7 | 10 |
| 9 | 13 |
varp(m); // output [8,18]