Instructions for this demo are down below the graph.

The applet above compares the lines students drew by eye with the lines they drew using calculated least squares coefficients.

First, it shows the eyeball lines. Click on the LS lines button to switch from the eyeball regression lines to the least squares regression lines.

Click the button, now labelled Both, to see both sets of lines.

Click the button, now labelled Eye lines to go back to displaying just the eyeball lines.

Does one estimator appear to be more efficient than the other?

© 2000-2007 Samuel L. Baker
The author is solely responsible for the views expressed on this page. This page has not been reviewed or approved by the University of South Carolina.