what is the coefficient of predicting variance in regression why does pca represent when does pca represent shared variance why is shared variance important what does shared variance mean does pca account for shared variance why is the covariance between two different variables different from shared variance what does shared variance mean in factor analysis why would you assume the correlation coefficient between two variables is unequal what is shared variance why is the correlation coefficient squared a covariance what is the correlation coefficient squared? what is the correlation coefficient of a linear model? which term describes the proportion of covariance? why is the coefficient of agreement a shared variance what's the correlation coefficient which statement is appropriate for a correlation coefficient squared? what is the coefficient of variation on regression does pca account for variance how does $r2$ represent a coefficient of correlation