This paper considers the testing of serial correlation coefficients when the underlying distribution is negative exponential. The first-order serial correlation coefficient is shown to be an ...

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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.

You've probably noticed certain things that have a clear relationship with one another. For example, the amount of petrol your car uses increases along with the number of kilometres you drive. Or, if ...