There is some really excellent material on regression at the University of Newcastle in Australia. The address is http://surfstat.anu.edu.au/surfstat-home/surfstat-main.html Go to this site and check both the links for “Statistical Inference” and for “Hotlist for Java Applets.” The Java applets are particularly nice because they allow you to manipulate data on the screen and see what difference it makes. Write a short description of the material you found there.