Re: [EquisMetaStock Group] Subject: Linear Regression / Linear Regression Slope Relationship

["Roy Larsen" <rlarsen@xxxxxxxxxxxxxx>]

Hi Jose

> > b=the slope (Linear Regression Slope)
> > and
> > b=[(x1-xbar)(y1-ybar)+.......+(xn-xbar)(yn-ybar)]/
> >    [(x1-xbar)sq +......+(xn-xbar)sq]
>
> Which is almost the same as:
>
> startBar:=Cum(1)-pds;
> y:=pds*Sum(startBar*x,pds)
>  -Sum(startBar,pds)*Sum(x,pds);
> z:=pds*Sum(Pwr(startBar,2),pds)
>  -Pwr(Sum(startBar,pds),2);
> LRS:=y/z;
>
> There must be an easy way to get rid of the Cum(1).

I see what you've done with "Cum(1)-pds" and I would have thought it was way to go too. My head is
beginning to hurt. This will have to go on the back burner now that the weekend is over.

Regards

Roy




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