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题目内容
A typing test was given to 87 people. The table shows the cumulative frequency distribution for the numbers of errors made by this group of people on the test. How many of the 87 people made exactly 3 errors on the test?
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· 相关考点
6.1.1 子集 5.1.1 表格
6.1.1 子集
5.1.1 表格
以上解析由 考满分老师提供。