试了几次summary(model3.11)结果都没有显著性检验,而且结果和楼主的结果不太一样,school(非school.1)intercept 和cgecocab的“Corr”不是1,而是0.53,和model3.10的相关系数一样。
Error in calculation of the Satterthwaite's approximation. The output of lme4 package is returned
summary from lme4 is returned
some computational error has occurred in lmerTest