stdp
Syntax
stdp(X)
Arguments
X is a vector/matrix/table.
Details
If X is a vector, return the population standard deviation of X.
If X is a matrix, calculate the population standard deviation of each column and return a vector.
If X is a table, calculate the population standard deviation of each column and return a table.
As with all other aggregate functions, NULL values are not included in the calculation.
Examples
stdp(1 2 3);
// output
0.816497
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 |
stdp(m);
// output
[2.8284,4.2426]