回归直线法是根据若干期业务量和资金占用的历史资料，运用最小平方法原理计算不变资金和单位销售额的变动资金的一种资金习性分析方法·
本文利用实验数据建立一元线性回归方程；回归直线，并用方差分析法和相关系数法检验方程的有效性。
This paper use experimental data to set up linear regression equation with unitary and regression straight line, to use variance analysis and related coefficient to test validity of equation.
采用最小二乘估计法对试验数据进行了拟合，得到了回归直线，并分析了不同电流下激光管的失效机制。
Least-square principle method was used to process experimental data and the regression line obtained. The failure mechanism of the He-Ne laser tube under different current has been analyzed.
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