All Posts

Learn SAS
Chris Hemedinger 0
Smart Cats with blogs on stats

Let's face it: ever since cats learned how to access the Internet, they've managed to besmirch their prestigious status as the "smarter-if-a-bit-aloof" pet. They've starred in many demeaning YouTube videos, bringing shame to their species for the sake of some cheap laughs. But I'm here to tell you: there are

Advanced Analytics
Rick Wicklin 0
Sampling with replacement

Sampling with replacement is a useful technique for simulations and for resampling from data. Over at the SAS/IML Discussion Forum, there was a recent question about how to use SAS/IML software to sample with replacement from a set of events. I have previously blogged about efficient sampling, but this topic

SAS Events
Waynette Tubbs 0
Introducing our SASonality

Before the two most recent SAS Global Forums, I wrote posts introducing you to SAS presenters and SAS user presenters. In 2009 (my first SAS Global Forum), I wrote the SAS Presenters Series and introduced SAS professionals including I-Kong Fu, Chris Hemedinger and Daniel Jahn. In 2010, the introductions included

Advanced Analytics
Rick Wicklin 0
Tricks and Treats

How can you change a programming trick into a programming treat? Try this algorithm: If you develop a clever snippet of code, squirrel it away. This snippet is a "trick." If you use the trick a second time, copy and modify the code. The trick has become a "treat." If

Advanced Analytics
Rick Wicklin 0
Evaluate an iterated integral

The SAS/IML language provides the QUAD function for evaluating one-dimensional integrals. You can also use the QUAD function to compute a double integral as an iterated integral. A One-Dimensional Integration Suppose you want to evaluate the following integral: To evaluate this integral in the SAS/IML language: Define a function module

1 673 674 675 676 677 685