The Grouping Problem and Beef Quality Standards
以美国农业部的牛肉分级系统为例，展示了为描述方便而对总体元素进行分组的方法，并证明分组与响应面方法的结合比过去的方法更适合分析牛肉标准。
Abstract Methods of grouping the elements of a population for descriptive convenience are illustrated on the U.S. Department of Agriculture's beef grading system. A combination of grouping and response surface methods is shown to be more appropriate than methods used in the past to analyze the beef standards.