To create a bar chart of the category variable:
Select → from the main menu.
The Bar Chart dialog box appears. (See Figure 2.3.)
Select the variable category, and click .
Note: In most dialog boxes, double-clicking a variable name adds the variable to the next appropriate field.
Click .
The bar chart in Figure 2.4 appears. The bar chart shows the number of observations for storms in each Saffir-Simpson intensity category.