Basic Analysis and Graphing - SAS

36 Performing Univariate Analysis Chapter 2
The Distribution Report
Histograms
• The initial report for a categorical variable contains a Frequencies report. See “The Frequencies Report”
on page 38.
• The initial report for a continuous variable contains a Quantiles and a Summary Statistics report. See
“The Quantiles Report” on page 39 and “The Summary Statistics Report” on page 39.
Histograms visually display your data. For categorical (nominal or ordinal) variables, the histogram shows a
bar for each level of the ordinal or nominal variable. For continuous variables, the histogram shows a bar for
grouped values of the continuous variable.
Table 2.2 Histogram Actions
Highlighting data
Creating a subset
Resizing the entire histogram
Rescaling the axis
Resizing histogram bars
Specifying your selection
Click on a histogram bar or an outlying point in the graph. The
corresponding rows are highlighted in the data table, and
corresponding sections of other histograms are also highlighted, if
applicable. See “Highlight Bars and Select Rows” on page 37.
Double-click on a histogram bar, or right-click on a histogram bar and
select Subset. A new data table is created that contains only the
selected data.
Hover over the histogram borders until you see a double-sided arrow.
Then click and drag the borders. For more details, see the Using JMP
book.
(Continuous variables only) Click and drag on an axis to rescale it.
Alternatively, hover over the axis until you see a hand. Then,
double-click on the axis and set the parameters in the Axis
Specification window.
(Continuous variables only) There are multiple options to resize
histogram bars. See “Resize Histogram Bars for Continuous Variables”
on page 37.
Specify the data that you select in multiple histograms. See “Specify
Your Selection in Multiple Histograms” on page 38.
To see additional options for the histogram or the associated data table:
• Right-click on a histogram. See the Using JMP book.
• Click on the red triangle next to the variable, and select Histogram Options. Options are slightly
different depending on the variable modeling type. See “Options for Categorical Variables” on page 42
or “Options for Continuous Variables” on page 44.