Is 'Making More Friends Cures Depression' True? The 'Correlation Trap' Shown by Statistics and the Pitfalls of Medical Statistics

A waiting room at a public health center. A mother three months postpartum is consulting with a public health nurse. The ...
Crypto Briefing

Altcoins break from Bitcoin as 14-day correlation hits lowest since July 2025

Altcoins' 14-day average correlation with Bitcoin turned negative for the first time since July 2025, signaling a fragmented crypto market.

Correlation between CVE count and data breaches r=0.9: Cyberattacks are trending sharply upward, and this is just the beginning ("r=0.9" 01)

The "correlation between the number of CVEs and the number of data breach incidents, r=0.9" is the background behind the ...
Forbes

Big Data News Roundup: Correlation vs. Causation

In the first quarter of 2013, the stock of big data has experienced sudden declines followed by sporadic bouts of enthusiasm. The volatility—a new big data “V”—continues this month and Ted Cuzzillo ...
CryptoSlate

Bitcoin just hit a decade-low S&P 500 correlation, but the daily data tells a different story

Bitcoin’s S&P 500 correlation hit its lowest level since 2015, but return data shows BTC still frequently falls alongside stocks.
Kellogg School of Management

Covariance and Correlation

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 ...