The one-year correlation between the S&P Equal Weight Index and S&P 500 has dropped to a record low of 79%, revealing extreme ...

Learn why correlation—not allocation—is the key to diversification, and how ETFs can help build portfolios with assets that ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

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 ...

Correlation analyses are widely used to infer biological relationships, yet preprocessing can introduce structural dependencies that inflate correlation estimates. Here, we examine an under-recognized ...

What is Pearson correlation test, Pearson product moment correlation or Pearson r? Pearson’s correlation helps us understand the relationship between two quantitative variables when the relationship ...

Correlation doesn't imply causation. You've probably heard that before. It's a true statement that's important in statistical analysis—if more tall people own cats, that doesn't mean that cats cause ...