在做HLM回归时,将输出的回归结果与课本上的对照,多出了这样一句话The residual parameter variance for this level-1 coefficient has been set to zero,如下图,The model specified for the covariance components was:部分没有输出结果,是什么原因?怎么解决啊?
是第二层变量显著的就保留吗?我现在得到的结果文件里面,只要是与第一层变量相关的结果,一个都不显示,然后出现下面这段话,不知道问题又出在哪了?HLM2 is unable to compute starting values based on the specified model.Every level-1 predictor matrix is near singular.
1) Center one or more level-1 predictors.
2) One (or more) of the random effects should be either deleted from the model
or treated as fixed.