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covariance |
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Covariance A measure of the degree to which returns on two risky assets move in tandem. A positive covariance means that asset returns move together. A negative covariance means returns vary inversely. One method of calculating covariance is by looking at return surprises (deviations from expected return) in each scenario. Another method is to multiply correlation between the two variables by the standard deviation of each variable. Notes: If you owned one asset that had a high covariance with another asset that you didn't own, then you would receive very little increased diversification by adding the second asset. Of course, the opposite is true as well, adding assets with low covariance to your portfolio lowers overall portfolio risk.Covariance A statistical measure of the degree to which random variables move together. A positive covariance implies that one variable is above (below) its mean value when the other variable is above (below) its mean value.
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10] HIV viral load in relation to malaria clearance, persistence, absence, or new infection using a repeated measures model with autoregressive covariance structure. A 2-way analysis of covariance (ANCOVA) was performed with time period (pre- or post-course) and CE attendance (attendee or nonattendee) as the independent variables and change in NDI scores as the dependent variable. On the Covariance Structure of Changes in Consumption in the Health and Retirement Study Michael Perry MRRC Working Paper No. |
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