While big data is rife with potential, as Larry Greenemeier explained in his recent Scientific American blog post Why Big Data Isn’t Necessarily Better Data, context is often lacking when data is pulled from disparate sources, leading to questionable conclusions. His blog post examined the difficulties that Google Flu Trends
When I visualize three-dimensional data, I prefer to use interactive graphics. For example, I often use the rotating plot in SAS/IML Studio (shown at the left) to create a three-dimensional scatter plot. The interactive plot enables me to rotate the cloud of points and to use a pointer to select
As teachers head into the madness of student course registration, the madness of college basketball reinforces a critical point: Data is crucial to making the picks that lead to a winning bracket, and student growth. Value-added assessment has proven reliable in determining which students are ready for their "one shining moment". This
