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);
0
$ varp(1 2 3);
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);
[8,18]