My students know how I cringe when I am forced to teach them p-values. I have always felt that their meaning is hard to grasp, and hence they are mostly abused when used by non-statisticians. This is...

I've recently had interesting discussions with colleagues in Information Systems regarding testing directional hypotheses. Following their request, I'm posting about this apparently illusive issue....

Following up on my previous posting about using SAS Enterprise Minder via the On Demand platform: From continued communication with experts at SAS, it turns out that with the EM version 5.3, which is...

I am in the process of trying out SAS Enterprise Miner via the (relatively new) SAS On Demand for Academics. In our MBA data mining course at Smith, we introduce SAS EM. In the early days, we'd get...

Statisticians love variable transformations. log-em, square-em, square-root-em, or even use the all-encompassing Box-Cox transformation, and voilla: you get variables that are "better behaved". Good...

Scatterplots are extremely popular and useful graphical displays for examining the relationship between two numeric variables. They get even better when we add the use of color/hue and shape to...

The European Network for Business and Industrial Statistics (ENBIS) has released the 2009 ENBIS Challenge. The challenge this time is to use an exploratory data analysis (EDA) tool to answer a bunch...