回归软件程序将样本点用图表示，并且给出最拟合样本点的直线的价值函数公式。
Regression software programs graph the sample points and give the (cost-function) formula of the straight line that best fits the points.
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.
本文还提出一种反映回归直线拟合优度的新的相关系数。
A new correlation coefficient that indicates goodness of-fit for regression line will be introduced yet in this paper. The illustrative examples are presented.
接着利用统计学方法，建立影响因素与产值之间的直线回归模型，并对回归模型拟合程度进行分析；
Then using statistics method, establishing the regression model of straight line and analyzing join level for regression model;
接着利用统计学方法，建立影响因素与产值之间的直线回归模型，并对回归模型拟合程度进行分析；
Then using statistics method, establishing the regression model of straight line and analyzing join level for regression model;
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