Normality Test (Shapiro-Wilk) Dialog

This dialog is activated by selecting the Normality Test (Shapiro-Wilk)... command from the Statistics -> Descriptive Statistics -> menu.

The Shapiro-Wilk method can be used to test the null hypothesis that a data sample came from a normally distributed population. The Wikipedia article on the Shapiro-Wilk test makes for excellent reading on this topic.

Figure 5-89. The Normality Test (Shapiro-Wilk) dialog.