我都怀疑是不是出错题了哈~~ 题目是酱紫滴:
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150, 200, 250, n
which of the following could be the median of the 4 integers listed above?
1. 175
2. 215
3. 235
A. 1 only
B. 2 only
C. 1 and 2 only
D. 2 and 3 only
E. 1, 2 and 3
答案是C, 不明白. median是中值的意思还是平均数啊????
虾米 -_-'b
是这个定义么?
median(中数) 将一堆数排序之后,正中间的一个数(奇数个数字), 或者中间两个数的平均数(偶数个数字)
那这题怎么解释啊, 还是不太明白诶
median=150+200/2=175;
median=200+230/2=215;
无论N取何值, 235不成立
150, 200, 250, n
which of the following could be the median of the 4 integers listed above?
if n<150, median =175 最小的中值
if n>250, median = 225 最大的中值
so , 235 is impossible, it's >225
答案是C.
明白啦, 谢谢谢谢 :-)
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