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x, 3, 1, 12, 8
If x is an integer, is the median of the 5 numbers shown greater than the average (arithmetic mean) of the 5 numbers?
(1) x > 6
(2) x is greater than the median of the 5 numbers.
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
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1）x>6,平均数>6,中位数有可能是6，8，不能比较
2）x大于中位数，说明x>8,平均数未知，不能比较
1）+2）只能求出x>8,中位数是8，不能得出具体的平均值
小良冠二郎
错选d，其实仔细思考就可以发现，条件1里的median只能是7和8，但是average可以是无限大，所以insufficient。同理，条件2里median最大也只能是8，而average也可以是无限大的。
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2023-03-15 13:53:24
Vincent Hu
（1）取x最小7，x等于7，中位数为7，经过计算，中位数大于平均数 取x最大正无穷，中位数为8，中位数小于平均数 所以无法确定 （2）x大于数列的中位数，那么x一定大于8，取x最小等于9，经过计算，中位数8大于平均数6.6 取x最大正无穷，中位数为8，中位数小于平均数 所以无法确定
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2020-02-10 04:53:18
AlexYang
这题的关键是，median最大是8，但是条件（1）或（2），得出的average可以是6到∞。
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2018-04-15 13:11:24
gmat前女友
average=(24+x)/5 (1)如果x=7，median=7，average=6.2，median>average；如果x=16，average=8=median； (2)media=8，x>8，如果x=9，average=6.6，median>average；如果x=16，average=8=median； 如果同时满足条件1、2，同（2）。
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2017-10-18 14:43:36
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数据充分DS
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破解版07
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