when is a residual in a sem value fixed how to make a linear equation with latent value what is the variance of first order residuals is it reasonable to fix the variance of first order residuals to 1? why do you set weights for sem variances is residual variance fixed for sem what is the residuals in sem do you need to fix variances of residuals when do you fix residual variance in sem how to fix residual variance to 1 in sem? what is the sme variance of regression when is residual variance fixed? when to fix variance of residuals in sem sem variances of variance how to fix residual variance in sem which variable is fixed in an sim model how to fix residual variances why is the sem variance fixed to zero what type of variance does ems measure what does the variance of first order factor residuals (res_f5) mean?