第五章探讨了建摸中变量选择的影响分析，刻划了数据、复共线性关系和模型错定对自变量选择的影响。
In Chapter 5 I inquire into the influence analysis of variable selections in modeling through data , multicollinearity andmodel mis-specification.
主要研究模型假设的合理性和自变量的选择。
It mainly researches the rationality of regression model and the independent variables selection.
当前，物质利益仍然是大部分人效用函数中最重要的自变量，影响注册会计师行为选择的有两个决定性因素：一是收益，二是成本。
The material interests are still the most important independent variable in people's effectiveness function, so two key factors which influence CPA's choices are income and cost.
不足之处则在于定量模型自变量的选择可能存在考虑不周之处。
However, there are some parts that can be improved, such as how to choose the independent variables more properly.
结论当有自变量不符合比例优势假定条件时，偏比例优势模型是更为合理的选择。
Conclusion The partial proportional odds model is more appropriate when proportional odds assumption was violated.
结论当有自变量不符合比例优势假定条件时，偏比例优势模型是更为合理的选择。
Conclusion The partial proportional odds model is more appropriate when proportional odds assumption was violated.
应用推荐