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【OG20-P291-431题】
Tom, Jane, and Sue each purchased a new house. Theaverage (arithmetic mean) price of the three houseswas $120,000. What was the median price of thethree houses?
(1) The price of Tom’s house was $110,000.
(2) The price of Jane’s house was $120,000.
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条件一:11,12.5,12.5,11定,其余两个数字大小可变,导致三个数顺序可变,无法确定中位数
条件二:12,12,12,其中一个12定下来,不管剩余两个12大小如何变化,定下来的12(Jane)一定是第二个数,即中位数
题目讨论 (5条评论)

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ziqi
好像总是被这种急转弯的题考到
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0 回复 2022-04-24 20:48:57
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Crystal8
中位数➕平均数混合,又又不仔细
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0 回复 2021-11-23 21:10:10
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冲他丫的
1的话 11 12.5 12.5或都可变化 2不可以
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0 回复 2021-10-15 23:10:33
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Elaine750
一定要单独来考虑每一个条件。。。
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0 回复 2019-11-03 16:08:04
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乔治8198
T+J+S=360000,因为J=120000,所以T+S=240000,虽然不知道T和S具体取值多少,但是肯定是一个大于120000,一个小于120000,那么J都是中位数。或者T和S都是120000,那么中位数也是120000
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0 回复 2018-12-15 16:39:49