Two graphs: a histogram and a Normal plot.
The histogram of birth weight is symmetrical. A Normal curve is superimposed which fits the histogram very closely.
The Normal plot shows Inverse Normal on the horizontal axis and birthweight on the vertical axis. The points are very close to the straight line, which they completely obscure.
Back to Clinical Biostatistics: Inference about means.
This page maintained by Martin Bland.
Last updated: 2 August, 2006.