Scatter plot with group, Formula 1 or Formula 2, on the horizontal axis and blood glucose on vertical axis. The scale for blood glucose is labeled 0, 2, 4, 6, 8.

There are two columns of points showing similar spread. The column for the Formula 1 group starts at glucose = 2.8 and finishes at glucose = 6, with one outlying point at glucose = 1.2. The column for the Formula 2 group starts at glucose = 2.8 and finishes at glucose = 5, with one outlying point at glucose = 6.8. Apart from the outliers, the columns are similar.

In each group, the majority of the points are clustered together near the centre.

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This page maintained by Martin Bland.

Last updated: 24 July, 2009.