Rick Wicklin
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Research Statistician Developer

Rick Wicklin, PhD, is a distinguished researcher in computational statistics at SAS and is a principal developer of PROC IML and SAS/IML Studio. His areas of expertise include computational statistics, simulation, statistical graphics, and modern methods in statistical data analysis. Rick is author of the books Statistical Programming with SAS/IML Software and Simulating Data with SAS. Follow @RickWicklin on Twitter.

Recent Posts

Statistical model building and the SELECT procedures in SAS

Last week I read an interesting paper by Bob Rodriguez: "Statistical Model Building for Large, Complex Data: Five New ... Read More

Do you write unnecessary SAS statements?

I'm addicted to you. You're a hard habit to break. Such a hard habit to break. —  Chicago, "Hard Habit ... Read More

Color markers in a scatter plot by a third variable in SAS

One of my favorite new features in PROC SGPLOT in SAS 9.4m2 is addition of the COLORRESPONSE= and COLORMODEL= ... Read More

Absorbing Markov chains in SAS

Last week I showed how to represent a Markov transition matrix in the SAS/IML matrix language. I also showed ... Read More

Break a sentence into words in SAS

Two of my favorite string-manipulation functions in the SAS DATA step are the COUNTW function and the SCAN function. ... Read More

Markov transition matrices in SAS/IML

Many computations in elementary probability assume that the probability of an event is independent of previous trials. For example, ... Read More

Cantor sets, the devil's staircase, and probability

Last week I blogged about how to draw the Cantor function in SAS. The Cantor function is used in ... Read More

Visualize the Cantor function in SAS

I was a freshman in college the first time I saw the Cantor middle-thirds set and the related Cantor ... Read More

In praise of simple graphics

'Tis a gift to be simple. -- Shaker hymn In June 2015 I published a short article for Significance, ... Read More

Use the EFFECTPLOT statement to visualize regression models in SAS

Graphs enable you to visualize how the predicted values for a regression model depend on the model effects. You ... Read More