[Python-Dev] Accumulation module

[Tony Vignaux]

Raymond,

You asked:

> * Is there a way to compute the standard deviation without multiple
> passes over the data (one to compute the mean and a second to sum the
> squares of the differences from the mean?
> 
> 

I do not understand the problem in getting stdev in a single pass. 
Perhaps I not understood your problem. If you have a series of values 
you merely have to calculate their sum and sum-of-squares and use the 
usual formula.

Ignore this if this is dumb.


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