why is error variance important why is error variance important why is error variance important why is cfa analysis useful why is error variance important why is error variance important why is error variance of the cfa important? why is error variance important in cfa why is error variance important why is error variance important why is error variance important why is error variance important in cfa why is error variance important and which variable should be included in the cfa? quizlet why is error variance important in cfa analysis pdf? why is coefficient variance important in cfa analysis why is error variance important in cfa why is error variance important why is error variance important in a factor model is error variance in cfa important? why is cfa error variance important