Engineering applications, the interpolation and regression (curve fitting) function expression usually are used to describe data to solve the problem.

工程应用中通常用插值和回归(曲线拟合)解决函数表达式描述数据的问题。

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By comparing their fitting compatibility and the cumulative failure probability curve, the advantage of the Weibull-distribution based regression is concluded.

通过拟合优度和累积失效率曲线形态的对比，说明了威布尔分布用于曲轴失效数据分析的优越性。

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The calculating formulae of weighted optimum curve regression model parameter given in this paper possesses high speed of parameter correcting, high precision of fitting and obvious effect.

本文给出的带权优化曲线回归模型参数计算公式，修正参数速度快，拟合精度高，效果显著。

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