The correlation coefficient R and test of significance (F) showed that r was closely related to Sr. The average absolute error of the 102 radii of positive ions was only 0.9 pm with the representative radii of ions, the relative error was 1.1%.

• 从相关系数R和回归方程的显著性检验(F)都说明r与S_r密切相关；其中102种阳离子半径数据与具有代表性的离子半径参考值相比平均绝对误差仅0.；9pm；相对误差1