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If demand is perfectly inelastic, the absolute value of the price elasticity of demand is
Standard Deviation
A measure of the dispersion or variability around the mean of a set of data values, often used in finance to gauge investment risk.
Correlation Coefficient
A numerical measure ranging from -1 to 1 that represents the degree to which two variables are linearly related.
Covariance
Covariance is a measure indicating the extent to which two random variables change in tandem from their expected values.
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.
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