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 ...

The correlation function is a useful signal-analysis tool that engineers often overlook. Its formidable equation, which you have probably not thought about since your undergraduate signals and systems ...

In the first case, there is a strong upward-sloping relationship between X and Y; in the second case, no apparent relationship; in the third case, a strong downward-sloping relationship. Note the ...

I usually focus on something a subset of the population gets wrong, so the rest of us can feel smart, but this week, I’m going bigger and broader, and describing something that you, me, and everyone ...

The most powerful weapon that debaters wield against the unwary is causation: marijuana use leads to heroin addiction, pornography to rape, video games to mass murder, high consumption of margarine to ...

Four of your team members are hard at work, side by side at your facility. Each is wearing a brand-new gas detector that was calibrated and bump tested only a few hours ago. The problem is that two of ...

Correctly distinguishing between correlation and causation is critical because it influences how treatments for illnesses are devised and tested. Also, in the context of the law, it ensures that as ...