本文探讨了交叉试验设计资料的两种等效性检验方法，即双单侧t检验和可信区间法。
Two one-side test and confidence interval method can be used to test the equivalence.
方法根据中心极限定理和连续性校正原理，给出一次近似法和校正一次近似法计算总体率可信区间的公式。
Methods Based on central limit theorem and continuity correction principal , the formula of once approximate method and its continuity correction formula were derived.
目的在对现有总体率可信区间计算方法优缺点进行评价的基础上，研究计算总体率可信区间的一次近似法。
Objective To put forward the once approximate method for computing binomial confidence interval after present methods were evaluated and reviewed.
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