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1.
Select Help > Sample Data Library and open Hybrid Fuel Economy.jmp.
2.
Select Graph > Graph Builder.
3.
Select Comb MPG (combined miles per gallon) and drag it to the Y zone.
Figure 3.4 Initial Graph of Combined MPG
Because markers are assigned to rows in the data table, points are represented by those markers. The value of Comb MPG for each row is plotted at its value on the vertical axis. To avoid over-plotting points that correspond to observations with the same Comb MPG values, JMP automatically jitters the points.
5.
Place your cursor over Comb MPG in the Y axis. The cursor turns into a hand. Select and drag Comb MPG into the X zone.
Figure 3.5 Histogram of Combined MPG
1.
Click Start Over.
2.
Select City MPG, Hwy MPG, and Comb MPG.
This creates separate Y axes for City MPG, Hwy MPG, and Comb MPG.
Figure 3.6 MPG Variables with Separate Y Zone Axes
4.
Drag Engine to the Group X zone.
Figure 3.7 Boxplots of MPG Variables by Engine Type
7.
In the Caption Box options at the left of the plot, select Median from the Summary Statistic list for Comb MPG, Hwy MPG, and City MPG.
Figure 3.8 Boxplots of MPG Variables with Captions
1.
Click Start Over.
2.
Select City MPG and drag it into the X zone.
3.
Select Hwy MPG and drag it into the Y zone.
4.
Select Engine and drag it into the Overlay zone.
Figure 3.9 Hwy and City MPG by Engine Type
Tip: To add the y = x line, right-click in the graph and select Customize > + > Templates > Y Function. Replace _function_of_x_ with y = x and click OK.
6.
Drag a rectangle around the “o” marker with the smallest value of City MPG and check the number of rows selected in the Rows panel of the data table.
Figure 3.10 Density Contour for Hwy and City MPG by Engine Type

Help created on 3/19/2020