实验数据处理过程中有效数字的合理保留

RESEASONAL KEEPING OF THE EFFECTIVE NUMBERS IN THE EXPERIMENT PROCESS

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。本文通过对比分析提出,计算过程中应尽量保留中间量的小数位数,避免不当的简化计算,以保证结果的准确性。

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 displayfluctuation 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 tesults.