Single-variable graphs, or univariate graphs, let you look closely at one variable at a time. When you begin to look at your data, it’s important to learn about each variable before looking at how the variables interact with each other. Univariate graphs let you visualize each variable individually.
 • Histograms, for continuous variables
 • Bar Charts, for categorical variables
 • the average value and variation
 • extreme values
Example of a Histogram
This example uses the Companies.jmp data table, which contains data on profits for a group of companies.
 • Generally, how much profit does each company earn?
 • What is the average profit?
 • Are there any companies that earn either extremely high or extremely low profits compared to the other companies?
 1 Select Help > Sample Data Library and open Companies.jmp.
 2 Select Analyze > Distribution.
 3 Select Profits (\$M) and click Y, Columns.
Distribution Window for Profits (\$M)
 4 Click OK.
Histogram of Profits (\$M)
 • Most companies’ profits are between \$-1000 and \$1500.
 • The average profit is a little less than \$500.
 • One company has significantly higher profits than the others, and might be an outlier. An outlier is a data point that is separated from the general pattern of the other data points.
 •
 • Quantiles and Summary Statistics reports. These reports are discussed in Analyzing Distributions in Analyzing Your Data.
Example of a Bar Chart
This example uses the Companies.jmp data table, which contains data on the size and type of a group of companies.
 • What is the most common type of company?
 • What is the most common size for a company?
 1 Select Help > Sample Data Library and open Companies.jmp.
 2 Select Analyze > Distribution.
 3 Select Type and Size Co and click Y, Columns.
 4 Click OK.
Bar Charts of Type and Size Co
 • There are more computer companies than pharmaceutical companies.
 • The most common company size is small.
For example, suppose that you want to see the distribution of company size for the pharmaceutical companies. Click the Pharmaceutical bar in the Type bar chart, and the pharmaceutical companies are highlighted on the Size Co bar chart. Clicking Bars shows that although most companies in this data table are small, most of the pharmaceutical companies are medium or big.
Clicking Bars