Using JMP - SAS

Chapter 8 Summarize Data 233
Summarize Columns
Summarize Columns
The Tables > Summary command calculates various summary statistics, including the mean and median,
standard deviation, minimum and maximum value, and so on.
In a summary table:
• A single row exists for each level of a grouping variable that you specify. If no grouping variable is
specified, a single row exists for the full data table.
• When there are several grouping variables, the table contains rows for each combination of levels of all
the grouping variables.
• In addition to one column for each grouping variable, the table contains frequency counts in a column
named N Rows with counts for each grouping level.
• The summary table can be linked to its source table. When you select rows in the summary table, the
corresponding rows are highlighted in its source table.
• If the source table’s column(s) contain value labels, the value labels are displayed in the new table.
• A summary table is not saved when you close it unless you select File > Save As to give it a name and
location.
Create a Summary Table
To create a summary table:
1. Open a data table.
2. Select Tables > Summary. The window in Figure 8.2 appears.
3. Highlight the columns that you want to summarize.
Note: For details about the options in the red triangle menu, see the Basic Analysis and Graphing book.