### SDEV - how is it calculated on the HP41CV?

Posted:

**Mon Aug 23, 2010 5:54 am**Hi,

I am working on a open source HP41 simulator for the Android platform (http://android41cv.sourceforge.net/). I have implemented most of the functionality. I still miss to implement the SDEV function but I have not found out how the 41CV calculates the standard diviation based on Σx, Σ(x^2) and the number of x's.

I guess someone at forum.hp41.org knows the answer

Regards Martin

I am working on a open source HP41 simulator for the Android platform (http://android41cv.sourceforge.net/). I have implemented most of the functionality. I still miss to implement the SDEV function but I have not found out how the 41CV calculates the standard diviation based on Σx, Σ(x^2) and the number of x's.

I guess someone at forum.hp41.org knows the answer

Regards Martin