Graph description: Figure 2. Histogram with Normal distribution curve and Normal plot for log transformed serum cholesterol in 86 stroke patients

Two graphs, a histogram with a superimposed Normal curve and a Normal plot.

The histogram of log cholesterol is approximately symmetrical. The superimposed Normal distribution curve fits the histogram well. The mode of the Normal distribution is in the same place as the mode of the histogram.

The Normal plot has log cholesterol on the vertical axis and Inverse Normal on the horizontal axis. The line of points is straight and lies along the straight line of perfect Normal distribution.

Back to Clinical Biostatistics: Transformations.

This page maintained by Martin Bland.
Last updated: 3 August, 2006.