I came to the position that mathematical analysis is not one of many ways of doing economic theory: it is the only way.
我甚至认为，数学分析不是研究经济理论的诸多方法之一种，它是唯一的方法。
I use mathematical statistics analysis, such as confidence intervals, hypothesis testing, K-means Cluster, regression analysis and so on.
运用置信区间分析、假设检验、聚类分析、回归分析等数理统计分析方法。
I reconstruct this model by introducing new variable into it, and then some conclusions are arrived by mathematical analysis on it.
同时，对重构的数理模型进行一阶数理分析，得出相关的结论。
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