relative frequency of occurrence 事件的相关频率
The left axis shows the probability, or relative frequency of occurrence, of various Chi Square values.
纵轴显示各 X 平方分布值的概率（或称为出现的相对频率）。
Conclusion: the occurrence of the children low bone density is relative to zinc lack, should enhance the prevention and treatment of child zinc lack.
结论：儿童低骨密度的发生与锌缺乏有关，应加强儿童锌缺乏的预防和治疗。
Objective: to study relative factors and prognostic effects of occurrence of double sides primary breast cancer.
目的：探讨发生双侧乳腺癌的相关因素和对预后的影响。
应用推荐