ABSTRACT

Even in the first course in statistics, the slogan “Correlation is no proof of causation!” is imprinted firmly in the mind of the aspiring statistician or social scientist. It is possible that he leaves the course (and many subsequent courses) with no very clear ideas as to what is proved by correlation, but he never ceases to be on guard against “spurious” correlation, that master of imposture who is always representing himself as “true” correlation.