Re: dse 2010 doubt

Posted by SoniaKapoor on Jun 26, 2014; 2:48pm
URL: http://discussion-forum.276.s1.nabble.com/dse-2010-doubt-tp7593659p7593660.html

var(x)=E(x^2)-(E(x))^2
   sigma^2=E(x^2)-0
=sigma^2