ISO 16269-6:2013描述了建立统计公差区间的程序，该区间至少包括具有特定置信水平的特定人群比例。提供了单边和双边统计公差区间，单边区间有上限或下限，而双边区间有上限和下限。提供了两种方法，一种是参数法，适用于所研究的特征具有正态分布的情况，另一种是无分布法，适用于除了连续分布之外对分布一无所知的情况。还有一个程序，用于为多个具有共同未知方差的正常样本建立双边统计公差区间。

ISO 16269-6:2013 describes procedures for establishing statistical tolerance intervals that include at least a specified proportion of the population with a specified confidence level. Both one-sided and two-sided statistical tolerance intervals are provided, a one sided interval having either an upper or a lower limit while a two-sided interval has both upper and lower limits. Two methods are provided, a parametric method for the case where the characteristic being studied has a normal distribution and a distribution free method for the case where nothing is known about the distribution except that it is continuous. There is also a procedure for the establishment of two sided statistical tolerance intervals for more than one normal sample with common unknown variance.