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, ...

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 ...

The rooster thinks he summons the sun because the sunrise always follows his crow. Correlation, at its worst, is a very confident rooster. For decades, our data economy has run on the same illusion: ...

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.