Often we want to display data as a bar chart where a few observations have large values compared to the rest. Comparison between the smaller values becomes hard as the small bars are squeezed by the tall bars. Here is an example data, and a bar chart showing the data. The large values
In the summer of 2010, the LA Times made national waves by publishing Los Angeles Unified School District’s teacher names and value-added estimates. The New York Times followed suit in February, 2012, ranking New York City’s teachers based on their value-added ratings. While these bold actions may satisfy some parents
In the SAS/IML language, a user-defined function or subroutine is called a module. Modules are used to extend the capability of the SAS/IML language. In my blog posts, I usually define a module in a PROC IML session and then immediately use it. However, sometimes it is useful to store
