std
std(X) returns standard deviation for vector X.
If X is a matrix:
If X is a matrix:
- std(X) returns standard deviation for each column in X
- std(X,0,2) returns standard deviation for each row in X
Examples
> X = [1 2 1.4; 3.2 4 1.2; 3.1 2 3; 3 4 4.2]#
1 2 1.4
3.2 4 1.2
3.1 2 3
3 4 4.2
> std(X)#
1.05317 1.1547 1.41774
> std(X,0,2)#
0.503322
1.44222
0.608276
0.64291
Resources
