数据的统计解释 在成对观测值情形下两个均值比较

[中文适用范围]： 指定了一种方法，用于将总体差异的平均值与零或任何其他预先指定的值进行比较。 它可用于建立两种处理之间的差异，其中“处理”应广义理解，例如所涉及的测试方法、测量仪器或实验室，并且适用于可以考虑一系列差异的条件下作为一系列独立的随机项，并且差异的分布是正态或近似正态的。 如果分布偏离正态，只要样本量足够大（100 或更多），它仍然有效。 [外文原描述]： A method is specified for comparing the mean of a population of differences with zero or any other preassigned value. It may be applied to establish a difference between two treatments, where "treatment" should be understood in a wide sense, e.g. as a test method, measuring instrument or laboratory involved, and is applicable under the conditions that the series of differences can be considered as a series of independent random items and the distribution of the differences is normal or approximately normal. If the distribution deviates from the normal, it remains valid provided the sample size is sufficiently large (100 and more).