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 ...

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 ...

How to Trade Bond ETFs: Understanding Credit Ratings, Duration & How They Really Work Commodity correlation isn’t static—and ignoring that can blow up your portfolio. Learn how to track it and adjust ...

"Correlation doesn't imply causation, but it does waggle its eyebrows suggestively and gesture furtively while mouthing 'look over there.'" Randall Munroe, Science & Math Cartoonist Chances are when ...

Bitcoin is once again moving closely in step with US stocks, at just about the worst time for crypto diehards.

Elvis Picardo is a regular contributor to Investopedia and has 25+ years of experience as a portfolio manager with diverse capital markets experience. Yarilet Perez is an experienced multimedia ...

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 ...

The correlation of bitcoin BTC $70,103.69 and ether (ETH) to the U.S. Dollar Index (DXY) has once again turned negative. BTC’s correlation coefficient to the DXY has fallen to -0.36, after moving as ...