Strengthen your programming skills with tips and techniques from the experts

## Simulate multivariate clusters in SAS

This article shows how to simulate data from a mixture of multivariate normal distributions, which…

Strengthen your programming skills with tips and techniques from the experts

By Rick Wicklin 3

This article shows how to simulate data from a mixture of multivariate normal distributions, which…

By Rick Wicklin 1

Did you know that you can get SAS to compute symbolic (analytical) derivatives of simple…

By Rick Wicklin 1

If you use SAS regression procedures, you are probably familiar with the "stars and bars"…

By Rick Wicklin 0

All statisticians are familiar with the classical arithmetic mean. Some statisticians are also familiar with…

By Rick Wicklin 0

When you implement a statistical algorithm in a vector-matrix language such as SAS/IML, R, or…

By Rick Wicklin 4

A SAS customer asked, "I computed the eigenvectors of a matrix in SAS and in…

By Rick Wicklin 0

Last week I blogged about the broken-stick problem in probability, which reminded me that the…

By Rick Wicklin 4

A SAS user needed to convert a program from MATLAB into the SAS/IML matrix language…

By Rick Wicklin 0

A classical problem in elementary probability asks for the expected lengths of line segments that…

By Rick Wicklin 1

For a time series { y1, y2, ..., yN }, the difference operator computes the…