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 ...

View post: Walmart's bestselling Lenovo tablet is on sale for just $106, but not for long Correlation measures the relationship of two stocks based on their returns (percentage gains or losses), not ...

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 ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Thomas J Catalano is a CFP and Registered Investment Adviser with the state of ...

An expression for the joint distribution of serial correlation coefficients, circularly defined, has been derived. It has been shown that this distribution possesses properties similar to those ...

IT has for some time been realized that the ordinary test of significance of the correlation coefficient cannot be applied indiscriminately to pairs of time series, since serially adjacent ...