## Jackknife estimates in SAS

One way to assess the precision of a statistic (a point estimate) is to compute…

Rick WicklinRSS

Distinguished Researcher in Computational Statistics

Distinguished Researcher in Computational Statistics

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*.

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One way to assess the precision of a statistic (a point estimate) is to compute…

By Rick Wicklin 2

Most numerical optimization routines require that the user provides an initial guess for the solution.…

By Rick Wicklin 0

In a previous article, I showed two ways to define a log-likelihood function in SAS.…

By Rick Wicklin 1

Maximum likelihood estimation (MLE) is a powerful statistical technique that uses optimization techniques to fit…

By Rick Wicklin 9

I have previously discussed how to define functions that safely evaluate their arguments and return…

By Rick Wicklin 12

If you toss a coin 28 times, you would not be surprised to see three…

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Last week I was asked a simple question: "How do I choose a seed for…

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By default, when you use the SERIES statement in PROC SGPLOT to create a line…

By Rick Wicklin 2

According to Hyndman and Fan ("Sample Quantiles in Statistical Packages," TAS, 1996), there are nine…

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In last week's article about the Flint water crisis, I computed the 90th percentile of…