Leslie Kramer is a writer for Institutional Investor, correspondent for CNBC, journalist for Investopedia, and managing editor for Markets Group. Correlation measures the linear relationship between ...

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 ...

There’s an old saying that goes, “figures don’t lie, but liars can figure.” But sometimes even the figures can spin a confusing story. That’s why I’ve always appreciated the power of understanding ...

Shark attacks and ice cream sales follow the very same trajectory when charted. When ice cream sales go up, so do shark attacks. When ice cream sales decrease, shark attacks decrease. With a ...

Correlation doesn’t mean what most people think it means. What most people mean when they say correlation is closer to machine learning than it is to the technical definition of correlation. If you ...