Locating missing values is important in statistical data analysis. I've previously written about how to count the number of missing values for each variable in a data set. In Base SAS, I showed how to use the MEANS or FREQ procedures to count missing values. In the SAS/IML language, I
Today, SAS announces a new addition to its global certification program: you can now become "SAS Versions"-certified. Over the past 36 years, SAS has delivered hundreds of software products to the business analytics marketplace. Each of those products has a version number. As new revisions are released, the combination of
A 23-year Harvard and Columbia University study was recently published shedding new light on the long-term impacts of teachers with both high and low value-added estimates. Researchers Chetty, Friedman, and Rockoff tracked math and reading assessment data on over 2.5 million students from 1989-2009. They then incorporated 90% of these
