The figure is in two parts: a histogram of the distribution of root sperm concentration and a normal plot of this distibution.

The histogram shows a roughly symmetrical distribution which matches quite closely the superimposed Normal distribution curve.

The normal plot has "Inverse Normal" on the horizontal axis and root sperm count on the vertical axis. The plot shows an almost perfect straight line.

Back to solution to question on the distribution of sperm count, 5.

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Last updated: 5 July, 2005.