Re: stat: standard deviation

[sfeam <sf...@us...>]

On Sunday, 31 August 2014 11:12:26 AM Jonathan Thornburg wrote:
> On Sun, Aug 31, 2014 at 08:21:21AM +0200, pl...@pi... wrote:
> > Is there any difficulty in simply providing both, clearly labelled 
> > sample SD and population SD. This forces anyone who does not know what 
> > that means to find out ( or if the difference is small carry on 
> > regardless ).  Relevant assumptions made about the population, degrees 
> > of freedom etc explained in help.
> 
> I strongly agree -- this option provides the most useful information
> for users who *do* know what's going on, and avoids misleading the unwary.

Stats now calculates and returns the sample standard deviation STATS_ssd
(in cvs for 5.0 and 5.1).   The formulae used to calculate all single-column
stats values are now given in the TeX-derived documentation.  The difference
between _stddev and _ssd in particular is noted in all documentation formats.

	Ethan