使用HLM6.08版做二层线性模型分析,第一层的两个自变量均为分类变量。计算随机效应模型,不能运行处结果,以下为提示:
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.
我第一层和第二层的缺失值,都已经处理。而且试过各种第一层自变量的定位方式,均不能计算出结果~
当把第一层自变量-分类变量都换成连续变量的时候,就能计算出结果,求助应该怎么处理。