mean and standard deviation

[justabovemaine]

I am using the lapack and blas libraries w/ fortran 90, but cannot determine how to calculate mean and standard dev. of a vector w/o calculating manually. Surely there is a function to do this? Thanks in advance for any tips. Currently, I send a vector to a subroutine to calculate both but this seems so slow.

 

[zhouxian]

try to use intrinsic functions : sum and dot_product

 

[mikrom]

In this guide

http://www.dur.ac.uk/resources/its/info/guides/138fortran90.pdf

on page52 you will find a module simplestats which contains examples of both functions.