topic Re: Slopes and Intercepts in Statistical Procedures

Slopes and Intercepts

pawandh — Sun, 14 Feb 2016 06:05:28 GMT

In linear regression we have y=b0 +b1x

where bo is the itercept and b1 is the slope.

b1=y2-y1/x2-x1 ,by this we get the slope

and b0 we get by putting the x=0

In multiple linear regression we have Y=b0+b1x1+b2x2+b3x3

now here how can we get the intercept and slope??

For intercept do we need to put x1,x2 and x3 all to 0??

Norman21 — Sun, 14 Feb 2016 09:51:59 GMT

The coefficients of each x term are the slopes.

If you set all the x to zero, you can calculate the intercept.

Norman.

Ksharp — Mon, 15 Feb 2016 01:46:42 GMT

No. You can't . It is high dimension data. There are lots of intercept and slope satisfied multiple linear regression Y=b0+b1x1+b2x2+b3x3

But only one of them is nearest center(has the smallest NORM), and SAS use OLS or ML to get that one .