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[img]ct_gre6image018[/img]The following 3 question refer to the data above.A、7
[img]ct_gre6image018[/img]The following 3 question refer to the data above.A、7
游客
2025-02-24
26
管理
问题
The following 3 question refer to the data above.
选项
A、76
B、77
C、78
D、79
E、80
答案
B
解析
标题:一个由8名大学三年级学生和12名大学四年级学生组成的班级的考试分数该班级考试分数的中数是多少?
解:本题的正确答案是(B)。该班级共有20名学生,考试分数的中数是指第10名和第11名学生分数的算术平均数。本题分布为从小到大,则第10人的分数为76,第11人分数为78,他们的算术平均数=(76+78)/2=77。
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