Example of Overlaying Histograms with Transparency

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Essential Graphing • Graph Builder Examples • Example of Overlaying Histograms with Transparency

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Example of Overlaying Histograms with Transparency

You are interested in finding out how blood pressure is related to a measure of diabetes disease progression. Progression can be Low or High. To see the relationship between blood pressure and disease progression, overlay histograms for these two responses.

1.

Select Help > Sample Data Library and open Diabetes.jmp.

2.

Select Graph > Graph Builder.

3.

Select BP and drag it to the Y zone.

4.

Select Y Binary and drag it to the Overlay zone.

5.

Click the Histogram element icon

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Figure 3.29 Blood Pressure Histograms Overlaid by the Levels of Y Binary

The histograms indicate that higher blood pressure readings are associated with the High level of disease severity.

6.

Click the Overlay zone and drag Y Binary to the Group X zone.

7.

(Optional) Click Done.

Figure 3.30 Individual Blood Pressure Histograms for the Levels of Y Binary

Now you see individual histograms for each of the severity levels.

Overlaid histograms can be useful in seeing overlap, as well as differences, in responses over a small number of categories.

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Help created on 7/12/2018