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 ...

In finance and investing the correlation coefficient is used to calculate a statistical measurement of how strong movements in two markets are historically in relation to one each other. The ...

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 ...