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Chapter 8 Summarizing Data 275
Tabulating Data
• Add Analysis Columns Choose Add Analysis Columns if you want to compute the statistics of
these columns.
• Columns by Categories Choose Columns by Categories if the columns are independent
grouping columns (in other words, no hierarchical nesting) sharing a similar set of distinct data
values, and you want a crosstabulation of the column by the categories layout.
• Grouping Columns for Separate Tables Choose Grouping Columns for Separate Tables if
you have multiple independent grouping columns and you want to generate separate tables for each
grouping column.
Inserting a Grouping Column
To insert a grouping column, click and drag, and then release a column name or statistics keyword into
the table. Select Add Grouping Columns from the menu that appears, as shown in Figure 8.13. If
adding it as a grouping column is the only logical choice, JMP automatically inserts it as a grouping
column; the popup menu will not appear.
Figure 8.13 Example of Adding a Grouping Column
8 Summarizing Data
Inserting an Analysis Column
To insert an analysis column, click and drag, and then release a column name or statistics keyword into
the table. Select Add Analysis Columns from the menu that appears, as shown in Figure 8.13.
Using the Window
If you prefer not to click and drag and build the table interactively, you can create a simple table using
the window interface. After selecting Tables > Tabulate, select Dialog from the drop-down menu
beside Build table using, as shown in Figure 8.14. The window is very similar to the Summary window,
and the resultant table is like the layout of the summary table. (See “Summarizing Columns,” p. 263.)
You can change the table generated by the window in the same way that you would with one generated
through drag and drop.