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哪位高手帮忙我一下：
当我对amos计算时出现了一系列话，虽看了，但还是不太明白我的spss数据到底有什么问题。能帮我分析一下吗？万分感谢！
An error occured while atteming to fit the model
The sample moment matrix is not positive definite. It could fail to be positive definite for any of the following reasons:
1. The sample covariance matrix or the sample correlations matrix contains a data entry error.
2. The observed variables are linearly dependent (perhaps because the sample size is too small)
3. The sample covariance matrix or sample correlation matrix was computed from incomplete data using the method of ' pairwise deletion'.
4. The sample correlation matrix contains correlation coefficients other than product moment correlations (such as tetrachoric correlations)
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