Posted: 15 augusti, 2013 By: Comments: 0

Correlation or causation?

Correlation or causation? Source: xkcd

As I mentioned a couple of posts ago, I am currently taking a PhD course as an integral part of my research studies. The course is termed Experiment!, and the main literature for the course is the book Experiment! : Planning, Implementing, and Interpreting by Öivind Andersson (a Professor at Lund University). The book is great fun to read, and today I have revisited a chapter about the definition of an experiment. Inevitably, the chapter includes a section on the difference between a correlation and a causation, and the fact that a correlation not necessarily imply a causation (also illustrated in the comic above). I sure needed the repetition! Maybe that goes for you as well?


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