物理实验不确定度评定中两变量相关系数的一种近似算法

物理实验中两个变量的相关关系可以看成是这两个变量在某种意义上相同、相异、相反关系的总和．据此，用两个变量的同异反联系数近似地代替这两个变量的相关系数，从而简化了大学物理实验中作不确定度评定时相关系数的繁琐计算，为从微观角度分析相关系数的构成提供了新思路，也是对大学物理实验教学改革的一种有益探索．

An Approximate Calculation Method for Two Variable Correlation Coefficients in Uncertainty Evaluation of Physical Experiments

The relationship between two variables can be regarded as the addition of identity,discrepancy and contrary between two correlation coefficients in certain degree.Thus,it can be used that the Identity-Discrepancy-Contrary(IDC) connection number of the two variables to replace approximately the correlation coefficients of them.Therefore the complicated calculating of correlation coefficients in uncertainty evaluation of physical experiments is simplified.In the meantime,the calculation provides a new idea of the construction analysis of the correlation coefficients from the micro angle and a useful teaching reform method exploring for university physical experiments.