Click on the following links. Please note these will open in a new window.

1. An explanation of linear regression in layman’s terms (http://www.quora.com/How-would-linear-regression-be-described-and-explained-in-laymans-terms)
2. Video explanation of linear regression analysis of school year length with average life expectancy (https://youtu.be/fjGO3mrjskc)
3. A typical computer output of a linear regression model including a dummy control variable (http://www.cpp.edu/~jlkorey/POWERMUTT/Topics/regression_files/model3c.gif)