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Analytics | Data Visualization | Learn SAS

Rick WicklinJune 22, 2026 0

Create two types of Pareto charts in SAS

A Pareto chart is a popular chart for statistical quality control. It is often used to display the relative frequencies of issues that affect the quality of a manufacturing process. A bar chart displays the frequency of each issue that causes a defect. The bars are ordered by height: the

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Analytics | Learn SAS | Programming Tips

Rick WicklinJune 15, 2026 0

Create a confidence band for a normal Q-Q plot

This article shows how to compute a confidence band for a Q-Q plot in SAS. A previous article shows how to construct confidence bands for the CDF of continuous univariate data. The bands can be added to a plot of the empirical CDF (ECDF) for the data. One of the

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Analytics | Learn SAS | Programming Tips

Rick WicklinJune 1, 2026 0

How to visualize the variability in an ECDF

A previous article shows how to construct an empirical cumulative distribution function (ECDF) in SAS. The most common way is by using PROC UNIVARIATE, but you can also call the ECDF function in the SAS IML language. The ECDF is a tool for visualizing the distribution of a univariate sample

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