calculate random slopes what is the coefficient of variance for a random intercept of a random slope how to calculate random intercept variance why do linear mixed models have random intercepts? how to find the covariance between data how to add random intercepts in mixed models how to measure covariance how to calculate variance on different level of a model what does random mean variance mean in a mixed model what is the variance for random intercept how to calculate variance of a linear mixed model how to calculate random slope in a linear mixed model how to calculate random intercepts how do you find the variance in a linear mixed model how to calculate the average variation of a linear model average variance on random slope what is the difference between random intercepts and linear models for the school level what is the random intercept in the mixed model how do you get random intercepts which of the following is a way to calculate the variance of the random intercepts?