User Guide

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Chapter 15

Explore Plot

Figure 15-4

Explore Plots dialog box

Boxplots. These alternatives control the display of boxplots when you have more than

one dependent variable. Factor levels together generates a separate display for each

dependent variable. Within a display, boxplots are shown for each of the groups

defined by a factor variable.

Dependents together generates a separate display for each

group defined by a factor variable. Within a display, boxplots are shown side by side

for each dependent variable. This display is particularly useful when the different

variables represent a single characteristic measured at different times.

Descriptive. The Descriptive group allows you to choose stem-and-leaf plots and

histograms.

Normality plots with tests. Displays normal probability and detrended normal

probability plots. The Kolmogorov-Smirnov statistic, with a Lilliefors significance

level for testing normality, is displayed. If non-integer weights are specified, the

Shapiro-Wilk statistic is calculated when the weighted sample size lies between 3 and

50. For no weights or integer weights, the statistic is calculated when the weighted

sample size lies between 3 and 5000.

Spread vs. Level with Levene Test. Controls data transformation for spread-versus-level

plots. For all spread-versus-level plots, the slope of the regression line and Levene’s

robust tests for homogeneity of variance are displayed. If you select a transformation,