--- Brent Worden <[EMAIL PROTECTED]> wrote: > Any objection to tracking these and future feature requests using the wiki? > A wish list, if you will.
+1 We should formally note somewhere that that's the procedure we follow. Al > -----Original Message----- > From: Phil Steitz [mailto:[EMAIL PROTECTED] > Sent: Sunday, August 15, 2004 1:06 PM > To: Jakarta Commons Developers List > Subject: Re: [math] Only sample variances? > > > Kim van der Linde wrote: > > Hi, > > > > I just looked through the variance class, and saw that > > it only supports sample vasriance (N-1) but not > > population variances (N). Any reason for this, and can > > it be added? > > It would probably be better to add this to one of the aggregates or > StatUtils or to add a new statistic altother. This is because a > UnivariateStatistic can only report one value. The most commonly used (at > least in statistical applications) value for Variance and Standard > Deviation is the sample statistic, which is why that is what the > statistics named "StandardDeviation" and "Variance" report. From a user's > perspective, its not too hard to convert; but I agree that it would be > convenient to add these. Probably best to make new statistics in the > moment subpackage called "PopulationXxx". Patches welcome ;-) > > Phil > > > > > > Cheers, > > > > Kim --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
