将模糊集理论引入多元线性回归中，通过模糊控制变量，可以得出更符合实际，也更容易为人所理解的回归模型。

By introducing fuzzy control variable, the paper proposes a fuzzy multiple linear regression model which can get more effective and more understandable fuzzy regression expression.

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在此基础上，通过逐步回归分析确定用于高速公路事件持续时间预测的最佳变量组合并建立多元线性回归模型。

Then, stepwise regression analysis is used to select a best group of factors for the prediction of expressway incident duration, and the multiple linear regression model is established.

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实证部分主要包括多变量检验、单变量t检验、趋势图分析以及多元线性回归分析等。

Evidences include some of the major multi-variable tests, a single variable t tests, trend analysis and multiple linear regression analysis.

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