Possibilities are considered to simplify the computation of several statistical functions used to test statistical hypotheses when processing observations: the inverse normal distribution, the Student's t-distribution, and the criterion for rejecting outliers. For these three cases, simple approximation expressions are proposed for the quantiles of these statistical distributions, which are accurate enough for most practical applications.

翻译：考虑简化处理观测数据时用于检验统计假设的若干统计函数的计算可能性：正态分布逆函数、学生t分布及异常值剔除准则。针对这三种情形，提出这些统计分布分位数的简单近似表达式，其精度足以满足大多数实际应用需求。