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[img]ct_gre6image044[/img]In 1987 the average (arithmetic mean) population of t
[img]ct_gre6image044[/img]In 1987 the average (arithmetic mean) population of t
游客
2024-01-12
40
管理
问题
In 1987 the average (arithmetic mean) population of the three most populous of the ten selected states was most nearly equal to
选项
A、18 million
B、19 million
C、20 million
D、21 million
E、22 million
答案
D
解析
标题:1980年和1987年美国10个特定州的人口数据。在1987年,十个选定的州中人口最多的三个州的人口算术平均值最接近于多少?
解:本题的正确答案为(D)。“populous”是人口众多的意思。根据表格中的数据可知,排在前面的A,B,C三个州的人口最多,分别为27663000,17825000和16789000,因此他们的算术平均值为:(27663000+17825000+16789000)/3=20749000。计算结果与21 million最为接近。
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