The prerequisite for u test of comparison of sample rate and population rate;
样本率与总体率比较u检验的应用条件
This paper discussed the application of u-test formula in details, introduced the calculating formulae of u-test under various conditions about the standard error of the population.
对两个大样本均数比较的 u检验计算公式进行了详细的探讨 ,介绍了总体标准差已知、未知、相等和不等各种情况下 u检验的计算公式 ,认为在大样本的情况下进行均数比较的检验 ,应根据具体情况选择计算公式。