In general, 9.53% of the variance in debt maturity can be explained by industrial classification, and 4.15% of the variance by area dummy variables.
总的说来，债务期限9.53%的变异能由行业类别加以解释，4.15%的变异能由地区虚拟变量加以解释。
The dummy variables can only describe discrete changes in price indices, such as selling off-season dummy variable method will not be able to provide high precision analysis.
而虚拟变量只能描述价格指数的离散变化，比如在销售淡季虚拟变量法就不能提供精度较高的分析结果。
Dummy variables can only describe the discrete changes of price index, for instance, using dummy variables in sales off-season can not provide upper precision estimating result.
价格指数的变化是连续性的，而虚拟变量只能描述价格指数的离散变化，比如在销售淡季虚拟变量法就不能提供精度较高的分析结果。
Conclusion: It is easy to understand the analysis of covariance and analysis of variance can also be considered in regression analysis setting by defining appropriate dummy variables.
结论：在协方差分析中使用哑变量使对模型的理解变的简单，在方差分析中使用哑变量使得可以从回归的角度来理解模型。
The Application of Dummy Variables to the Linear Regression Model;
将虚拟变量引入修正模型，再次进行回归检验。
The Application of Dummy Variables to the Linear Regression Model;
将虚拟变量引入修正模型，再次进行回归检验。
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