A histogram of height.

The horizontal axis is labeled Height (cm) and numbered 130, 140, 150, 160, 170, 180, 190. The vertical axis is labeled Frequency and numbered 0, 20, 40, 60, 80.

There are vertical bars with bases 140 to 145, 145 to 150, 150 to 155, 155 to 160, and so on, and with heights 2, 8, 28, 35, 70, 40, 25, 12, 2.

The mean minus two standard deviations is marked at 148 cm. The mean minus one standard deviation is marked at 155 cm. The mean is marked at 162 cm. The mean plus one standard deviation is marked at 169 cm. The mean plus two standard deviations is marked at 176 cm.

Back to Clinical Biostatistics: Data, frequencies, and distributions.

This page maintained by Martin Bland.

Last updated: 2 August, 2006.