User talk:Mathmum/ZMean2Estimate/reply
From GeoGebra Manual
Salut Noel, I'm horribly bad at stats/probability :) so I just can't state right now whether it's the wiki or geogebra to be wrong. I can just observe that the two results are definitely different. I asked ggb to calculate the standard deviations of the samples and the results are ok, even if not displayed "formally" as square roots, but numerically - but I can't say more at a first glance. So I passed the hot potato to Mike by skype (he seems to be always away, but I tried it anyway) - Let's see if he has enough free time to have a look at that, too.
