摘要
在对实验数据进行线性回归分析时,相关系数r的计算结果会随数据小数位数的取舍而变化,表现出较大的涨落性.通过对比分析提出,应尽量保留中间量的小数位数,避免不当的简化计算。
When regressive analysis is made on groups of experimental data, the results of correlation coefficient change with the acceptance or rejection of places of decimals, and display fluctuation to a certain degree. So it is induced through analysis and contrast that the places of decimals be retain as many as possible for the accuracy of the results.
出处
《郑州轻工业学院学报》
1999年第4期78-80,共3页
Journal of Zhengzhou Institute of Light Industry（Natural Science）
关键词
线性回归
相关系数
涨落
最小二乘法
linear regressions
correlation coefficients
fluctuation
