This is a graph with two panels.

The first panel shows a histogram of residual standard deviation with a superimposed Normal curve. The distribution is slightly skew to the right and appears to have longer tails than the Normal curve.

The second panel shows a Normal quantile plot of residual standard deviation. The points form a curve which first becomes steeper, then less steep, then steeper again.

Back to Regression.

This page maintained by Martin Bland.

Last updated 27 July, 2009.