covariant: changing so that interrelations with another variable quantity or set of quantities remain unchanged
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Perhaps a more fundamental question is: what is the likelihood equation when the covariance matrix is not PSD? Assuming we're working in the Gaussian setting, recall that the likelihood
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What Does Covariance Mean? A measure of the degree by which the returns on two risky assets move in tandem. A positive covariance means that asset returns move together; a negative
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covariate A variable that may affect the outcome of a clinical trial, either because it has a direct causal relationship to the outcome or because it influences the outcome in a noncausal
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