This menu can be used to perform a Shapiro-Wilk test to assess whether a sample of data comes from a Normal distribution.
The menu displays the statistic, W, with its probability value under the assumption that the data are Normal.
So a low probability indicates that the data are unlikely to be from a Normal distribution.
Data
A variate containing the sample of data to be tested.
Available Data
This lists data structures appropriate to the current input field. The contents will change as you move from one field to the next. Double-click on a name to copy it to the current input field; alternatively, you can type the name directly into the input field.