which function can calculate standard deviation with weights?

I know function "std" can get an array's standard deviation;

but now I want to calculate standard deviation with certain weights for each number of array; for example,

X=[1,2,3,4,5]; and weights=[0.1,0.3,0.1,0.3,0.1];

so is there the built-in function in Matlab?

Answer 1

[Walter Roberson]

std(X, weights)

http://www.mathworks.com/matlabcentral/answers/319464-simple-question-about-standard-deviation#answer_249748

Answer 2

[vx2008]

thank you very much;