Using JMP Student Edition, Third Edition

6 Fit Y by X Platform Fitting Commands and General Options 157

6 Fit Y by X: Comparing Two Variables

Nonpar Density

When a plot shows thousands of points, the mass of points can be too dark to show patterns in density.

Using the

Nonpar Density (nonparametric density) option makes it easier to see the patterns.

Bivariate density estimation models a smooth surface that describes how dense the data points are at

each point in that surface. The plot adds a set of contour lines showing the density (Figure 6.24). The

contour lines are quantile contours in 5% intervals. This means that about 5% of the points are below

the lowest contour, 10% are below ...