Re: Simple Regression

[Dennis Roberts]

Try expanding the equation to a more raw score form ... with means and sds 
and the correlation in the formulas for the slope and intercept ... then 
substitute the mean of X into the formula and see what Y' value you get ...

At 12:45 AM 3/1/2004, you wrote:
Hi everyone,

I was just doing some questions for practice b/c I have a midterm coming up,
and there is a question that I'm having lots of difficulty with, it is not
really covered in the textbook.
Here it goes:
Show that the least squares line y^=b1 + b2x passes through the point
(ybar,xbar), where ybar is the mean of y and xbar the mean of x.
Thanks everyone.

Marijana

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Dennis Roberts
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