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Correlation coefficients range from -1 to +1, indicating the strength of relationships between variables. Investors use correlation coefficients for portfolio diversification to reduce risk.

Up to now, it has taken a great deal of computational effort to detect dependencies between more than two high-dimensional variables, in particular when complicated non-linear relationships are ...

Institutional asset managers use the copper–gold ratio as one of the 10-year Treasury yield’s leading indicators. Copper and gold are both dollar-denominated commodities that exhibit negative ...

What's of interest to note is that the US stock market is highly correlated to Japan's. The S&P 500 and the Nikkei 225 indices had a correlation coefficient of 0.84 for the year ending October 31.