Two graphs, a scatter diagram and a Normal plot.

The scatter diagram has the "Mean CRP (mg/L)" on the horizontal axis numberes 0, 50, 100, and 150. The vertical axis is labeled "CRP difference, last minus first" and numbered -200, -100, 0, 100, and 200. There is a horizontal line through difference = zero.

The points form a rough triangle with apex at mean = zero, difference = zero and sides going from the apex to mean = 125, difference = +200, and to mean = 125, difference = -200.

The Normal plot has CRP difference on the vertical axis and Inverse Normal on the horizontal axis. The line of points starts below the straight line of perfect Normal distribution then rises above it, then falls below it, then rises above it again.

Back to Clinical Biostatistics: Transformations.

This page maintained by Martin Bland.

Last updated: 3 August, 2006.