[Fwd: Puzzled by the "Variance"]
- To: mathgroup at smc.vnet.net
- Subject: [mg86552] [Fwd: [mg86506] Puzzled by the "Variance"]
- From: mante <claude.mante at univmed.fr>
- Date: Thu, 13 Mar 2008 04:36:03 -0500 (EST)
Variance[] is an *unbiassed* estimator of the variance. The estimator you are talking about was named VarianceMLE[] in version5, but seems to have disappeared! don = Table[RandomReal[], {5}]; Variance[don] Biassed = Mean[(don - Mean@don)^2] UB=Biassed*Length@don/(Length@don - 1) Regards, Claude -- ********************************* Claude Manté UMR CNRS 6117 LMGEM http://www.com.univ-mrs.fr/LMGEM/ Centre d'Océanologie de Marseille Campus de Luminy, Case 901 13288 MARSEILLE Cedex 09 tel : (+33) 491 829 127 fax : (+33) 491 829 119 *********************************