But the correct answer-easily found using a contingency table-is just 41 per cent.
但正确的答案却是41%（用列联表可以很容易得到这个结果）（译者注：列联表的使用见本文最后一部分）。
A contingency table is made up of rows and columns.
列联表是由横行和纵栏构成的。
Objective To discuss methods on estimation and test of independent incomplete three-dimensional contingency table.
目的系统讨论三维不完备表的独立性估计和检验方法。
Certain cases in the use of three-dimensional contingency table with ordered variables are discussed in this paper.
本文就含有序变量的三维列联表的几种情况作了讨论。
Certain cases in the use of three-dimensional contingency table with ordered variables are discussed in this paper.
本文就含有序变量的三维列联表的几种情况作了讨论。
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