Reference data and data governance
David Loshin suggests that reference data could be the foundation of future governance structures.
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Influential observations in a linear regression model: The DFBETAS statistics
My article about deletion diagnostics investigated how influential an observation is to a least squares regression model. In other words, if you delete the i_th observation and refit the model, what happens to the statistics for the model? SAS regression procedures provide many tables and graphs that enable you to
Fine-tuning the date axis in your bar chart
In these modern times, my utility bill has a bar chart so I can see how my current consumption compares to my historical usage. I decided to create my own version of this utility bill bar chart, and make a few improvements along the way. If you're into SGplot bar