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Correlation doesn't imply causation. You've probably heard that before. It's a true statement that's important in statistical analysis—if more tall people own cats, that doesn't mean that cats cause ...

Paul Kaplan: Quoting Benjamin Disraeli, Mark Twain famously quipped, "There are three kinds of lies: lies, damned lies, and statistics." In the field of investments, in which we rely heavily on ...

One of the first things taught in introductory statistics textbooks is that correlation is not causation. It is also one of the first things forgotten. – T. Sowell Correlations are often mistaken for ...

There’s an old saying that goes, “figures don’t lie, but liars can figure.” But sometimes even the figures can spin a confusing story. That’s why I’ve always appreciated the power of understanding ...

Most studies include multiple response variables, and the dependencies among them are often of great interest. For example, we may wish to know whether the levels of mRNA and the matching protein vary ...