Some dependent variables, belonging to category ones, served as dummy variables to make the regression result with a positively explanative sense.
自变量中的某些分类变量都采用了虚拟变量的形式，以使回归结果有明确的解释意义。
2
Results: By using dummy variable, we can broaden the application of regression analysis.
结果：正确使用哑变量，扩大回归模型的应用范围。
3
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.