what is sample variance how to find the covariance when using mova test how to compare variance if a variance matrices are nested how to compare a variance-covariance matrix to a test what is true variance if a covariance matrices is independent from a normal sampling of the data set, what is that what type of model should i use to test the fit of the true variance/ covariance matrix what is sample covariance matrices how to find the true variance of a covariance matrix how to test correlation in a nested model what type of matrices are sample variance and covariance? what is the variance matrix in a manova test is the variance matrices fully independent of the covariance matrix? what is the covariance matrices used in the model what is the covariance matrix for what are covariance matrices used for in statistics what is the correlation of a sample variance/covariance matrix? what is the covariance of the model how to find if the nested nested model is better than the variance matrix?