[R] What's going on? (strange standard deviation)

Matej Cepl matej at ceplovi.cz
Fri Nov 15 22:18:44 CET 2002

I have probably misunderstood something (again :-():

	> sum(CEMPLOY^2/length(CEMPLOY))-mean(CEMPLOY)^2
	[1] 30877.28
	> var(TEMPLOY,na.rm=TRUE)
	[1] 30981.25

Could anybody tell me, what's going on? I suppose that


or what did I enter wrong?



Matej Cepl, matej at ceplovi.cz,
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