I often teach in my statistics class that correlation should not be confused with causation. That is, observing that two variables move together does not necessarily mean that one variable caused the ...

Data purists would rap my knuckles for asking this question and reply, "Never". On the other hand, "data sophists" who're accustomed to lying with Big Data in even more crude ways would wonder, “Duh, ...

[This post incorporates parts of posts from posts on my own blog and lecture notes I circulate to my graduate students. I figured it was worth revising and posting here as a) basically none of you are ...

IN THE mid-1990s, an algorithm trained on hospital admission data made a surprising prediction. It said that people who presented with pneumonia were more likely to survive if they also had asthma.