Although in correlation the n-1 cancel out, statistical stddev and cov should use sample variance, as the estimated mean is used in E(X-E(X))^2 is one less degree of freedom.
--- Raul Miller <[EMAIL PROTECTED]> wrote: > Here's another (straightforward) variant: > > E=: +/ % # > SD=: %:@E@:*:@:- E > COR=: E@:*&(- E) % *&SD > > -- > Raul > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ____________________________________________________________________________________ Got a little couch potato? Check out fun summer activities for kids. http://search.yahoo.com/search?fr=oni_on_mail&p=summer+activities+for+kids&cs=bz ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
