为对国民经济与铁道运输业间相关关系进行定量分析,选取国内生产总值和铁路换算周转量指标作为系统行为特征映射量,观察序列曲线的相似程度,计算灰色相关系数,再用回归分析法进行拟合,得出两者的关系函数,并进行检验。结果表明,国民经济与铁道运输业之间的联系非常紧密,二者呈高度显著的正相关关系。 In order to quantitatively analyze the correlation between the national economy and railway transportation industry, select the GDP and railway conversion turnover as the system behavior characteristic maps, observe the similarity of the sequence curves, calculate the gray correlation coefficient, and then use regression analysis Fitting, get the relationship between the two functions and test. The results show that the link between the national economy and the railway transportation industry is very close, and the two have a highly significant positive correlation.