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 ...

Many mutual-fund investors strive for diversified portfolios, but few fully grasp a concept that is key to achieving that aim: correlation. Correlation is the extent to which assets perform in ...

The correlation function is a useful signal-analysis tool that engineers often overlook. Its formidable equation, which you have probably not thought about since your undergraduate signals and systems ...