Ribbon bar. Select the Graphs tab. In the More group, click Input Data Graphs and from the Probability Plot by submenu, select Normal Probability...

Classic menus. From the Graphs - Graphs of Input Data - Probability Plot by submenu, select Normal Probability...

...to produce standard normal probability plots for each category of the currently highlighted variable. In some spreadsheets, the selection of the grouping variable is predetermined by some global grouping variable (i.e., the grouping variable designated in an analysis dialog box). When this is the case, STATISTICA will incorporate the (predetermined) grouping variable name in the appropriate Graphs of Input Data option (e.g., Probability Plot by Gender). In most other cases, STATISTICA will prompt you to select the grouping variable via the Select Variable dialog box.

When you are prompted to select a grouping variable that will be used to categorize the values of the currently highlighted variable, the Select Variable dialog box is displayed. Once you have selected the grouping variable from this dialog box, the Codes dialog box is displayed, prompting you to enter the values (codes) for the previously specified grouping variable (if you leave the list of codes empty, all distinctive values of the grouping variable will automatically be used). After the codes have been entered, a plot displaying separate probability plots for each category of the grouping variable will be produced.