what are the drawbacks of common metrics? is the covariance metric accurate which metrics are good for covariance? what is the drawback of the metrics what are the drawback metrics what metrics are needed for covariance what is the best covariance metric what is a common metrics which metric is a drawback of covariance matrices? what is the best covariance measurement what is the most common metrics used for the covariance of linear models which metrics for convexity what is the drawback of most metrics what are the drawbacks of covariance matrices what is an appropriate covariance metric why are metrics important in covariance what is a common metric what covariance metrics drawback metrics for covariance matrixes common metrics drawbacks