what is this formula for

rbcc

Junior Member
Joined
Nov 18, 2009
Messages
126
Hi,

I have a quick question, is this a formula for variance?

\(\displaystyle \Sigma \ X^2\) \(\displaystyle -\) \(\displaystyle \frac{(\Sigma \ {X)}^2}{N}}\)

Thank you!
 

tkhunny

Moderator
Staff member
Joined
Apr 12, 2005
Messages
9,784
...Only if you divide by N.
 
Top