English

Rick Wicklin 0
How to plot a discontinuous function

It is easy to use the SGPLOT procedure in SAS to plot the graph of a well-behaved continuous function: just create a data set of the (x,y) values on some domain and use the SERIES statement to connect the points. However, to plot the graph of a discontinuous function correctly

Data Visualization
Sanjay Matange 0
Custom Box Plots

A frequent question we get from users is how to create a box plot with custom whiskers lengths.  Some want to plot the 10th and 90th percentile, while other want the 5th and 95th percentiles.  The VBOX statement in the SGPLOT  procedure does not provide for custom whiskers.  Also, unlike GTL,

Chris Hemedinger 0
Applied data science in college basketball

Revenge of the Nerds was so 1980s. Now it's a new world order: math geeks and athletes are working together. I'm not talking just about what happens when data nerds observe, analyze, and predict sports outcomes -- as they do in March Madness with their "bracketology". That's compelling, but your

Data Visualization
Sanjay Matange 0
Box with Scatter Overlay

A common request we have been often hearing is for display of the distribution of data as a box plot, along with some detailed information overlaid.  For example, one may have ratings data of all the hospitals in a region by different specialty, and you want to view this distribution

Students & Educators
Nadja Young 0
Busting myths of education value-added analysis, Part 1: You must control for demographics

In the past five years, value-added models have been increasingly adopted by states to support various teaching effectiveness policies. As educators make the paradigm shift from looking at only achievement data to incorporating growth data, many misconceptions have developed. Compounding this issue is the fact that not all value-added and

Data Visualization
Sanjay Matange 0
Parametric Bar Charts

A parametric bar chart in SG Procedure and GTL parlance is a simplified version of the regular bar chart, where the data is assumed to be summarized prior to its usage inside the SG procedures or GTL.  So, multiple occurrences of the same category and / or group combination is

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