why does grpint have 0 df in my model what type of variable is shyness why does the group mean variable have 0 degrees of freedom in the mixed model why do group variables in linear mixed effects have 0 df? what is the degree of freedom of a group variable in nlme why do group variables have 0 degrees of freedom what is the range of df in an r mixed effect why is df 0 in nlme what is the range of degrees of freedom of the group variables in a linear mixed-effects model? what is the coefficient of freedom of shyness in reml? why do group variables have 0 degrees when using variable grpint, why does shyness have no degrees of freedom why do random mean variable have 0 df why does a mixed effects model have 0 degrees of freedom why does shyness have 0 degrees of freedom how to find df of a mixed effect model how many degrees of freedom do you have on your variables in an r mixed model what variable has zero degrees of freedom why do group variables have 0 degrees of freedom in nlme why does a mixed effect model have a df