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Creating a Listable Function

• To: mathgroup at smc.vnet.net
• Subject: [mg73526] Creating a Listable Function
• From: Gregory Lypny <gregory.lypny at videotron.ca>
• Date: Wed, 21 Feb 2007 01:44:30 -0500 (EST)

Hello everyone,

I've created a function for population variance, which does not make  
use of Mathematica's built-in Variance function.

VarPop[x_] := Total[(x - Mean@x)^2]/Length@x

How do I need to change the definition to have the function operate  
across lists much like Total, Mean, and Variance do?

Regards,

	Greg