ISO/IEC指南98-3:2008/补充。2:2011涉及具有任意数量输入量和任意数量输出量的测量模型。所涉及的数量可能是真实的，也可能是复杂的。考虑两种方法来处理此类模型。第一种方法是GUM不确定性框架的推广。第二种是蒙特卡罗方法，作为分布传播的一种实现。当GUM不确定性框架的适用性存在疑问时，适当使用Monte Carol方法有望提供有效的结果。 对于规定的覆盖概率，ISO/IEC指南98-3:2008/Suppl。2:2011可用于为多变量模型的输出量提供覆盖区域，即单个标量输出量的覆盖区间的对应物。覆盖区域的提供包括那些采取超链接形式的区域- 椭球体或超矩形。这些覆盖区域是根据本文描述的两种方法的结果生成的。文中还给出了根据蒙特卡罗方法得出的最小覆盖区域近似值的计算方法。提供了详细的示例来说明指南。

ISO/IEC Guide 98-3:2008/Suppl.2:2011 is concerned with measurement models having any number of input quantities and any number of output quantities. The quantities involved might be real or complex. Two approaches are considered for treating such models. The first approach is a generalization of the GUM uncertainty framework. The second is a Monte Carlo method as an implementation of the propagation of distributions. Appropriate use of the Monte Carol method would be expected to provide valid results when the applicability of the GUM uncertainty framework is questionable. For a prescribed coverage probability, ISO/IEC Guide 98-3:2008/Suppl.2:2011 can be used to provide a coverage region for the output quantities of a multivariate model, the counterpart of a coverage interval for a single scalar output quantiy. The provision of coverage regions includes those taking the form of a hyper-ellipsoid or a hyper-rectangle. These coverage regions are produced from the results of the two approaches described here. A procedure for providing an approximation to the smallest coverage region, obtained from results provided by the Monte Carol method, is also given. Detailed examples to illustrate the guidance are provided.