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Remove parentheses and simplify.
-18r + 18 - 5(2r + 10)
Standard Deviation
A statistical measure of the dispersion or variability of a set of data points or investment returns, indicating the degree of risk involved.
Covariance
A metric that quantifies the extent to which two variables change in correspondence with each other.
Correlation Coefficient
A statistical measure that indicates the extent to which two variables change together, showing how one variable's movement is related to another's.
Standard Deviation
A statistical measurement that illustrates how spread out the values of a data set are around the mean, indicating the variability or volatility.
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