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

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The range of correlation coefficient of any bivariate discrete random vector with finite or countably infinite values is derived. We show analytically that the normal-transformed discrete bivariate ...

Crypto options exchange Deribit's forward-looking bitcoin volatility index (DVOL) offers clues about the market's expectations for price turbulence over the next 30 days, just as the Chicago Board ...