With two different risky assets, an investor can minimize total portfolio volatility through the combination of investments with low to negative correlation. In a higher yield environment, 60/40 can ...

Did you know you can customize Google to filter out garbage? Take these steps for better search results, including adding my work at Lifehacker as a preferred source. I usually focus on something a ...

A comment posted by a reader on a recent post reprimanded me for suggesting that marijuana caused relationships to go bad. In this instance the reader was mistaken, as I had specifically used the word ...

We’ve all been told that correlation does not imply causation. Yet many business leaders, elected officials, and media outlets still make causal claims based on misleading correlations. These claims ...

Like many people in this day of the marijuana legalization movement, your reporters seem to have difficulty in differentiating causation from correlation. The Herald (July 21) reports that, “If proven ...

Public health is worsening, autism rates are rising — and so are incident conspiracy theories, including claims that the root of the autism evil is vaccines. As the CDC reopens the vaccine-link debate ...

There's no causal link between taking acetaminophen and autism in an offspring, yet some studies point to a correlation. What does that mean? And who should parents listen to?

I try to be a positive force both in this column and my workaday life, so I was surprised to find this email from Mark Taylor in my inbox: "Look at this headline with a triple negative: 'Harder to ...

BEND, Ore. (KTVZ) -- Concerns are rising after federal officials flagged potential risks with acetaminophen use in pregnancy. Acetaminophen — or Tylenol — is one of the most common over-the-counter ...