Uploaded April 2012 | Updated September 2026, 2 hours ago

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I have an updated and revised (slower and otherwise improved) version of this video available at: youtube.com/watch?v=xIDjj6ZyFuw

I work through an example relating eggshell thickness to DDT concentration, fitting the least squares line, using the line for prediction, interpreting the coefficient of determination, checking the residual plots and carrying out a test on the slope.

The data used is from:
Risebrough, R. (1972). Effects of environmental pollutants upon animals other than man. In Proceedings of the Sixth Berkeley Symposium on Mathematical Statistics and Probability.