本文运用SAS软件中的二次响应面回归和聚类分析方法，研究了抑郁症临床症状与事件相关电位之间的相互关系。

In this paper, we study the correlativity between depressive clinical symptoms and event related potentials by the methods of response surface and cluster analysis in SAS.

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非线性回归和二次响应面模型。

Nonlinear regression and quadratic response surface models.

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在单因素试验基础上，利用二因素中心组合设计原理及响应面法分析建立二次回归模型。

Based on the results of single-factor experiments, a quadratic regression model was established with the help of two factors central composite experimental design and the response surface method.

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