Almost every day you can find in media commentary that XYZ is causing stocks to fall (or rise). Such definitive statements are common—but what’s almost always missing is statistical proof. And if you ...

Investors understand intuitively that some stocks are riskier than others. The capital asset pricing model attempts to quantify the common perception of risk using a term called beta. By understanding ...

It is demonstrated that probabilities for the distribution of the sample correlation coefficient, such as those given by David [2] can be quickly and accurately calculated on modern desk calculators.