Question

SAT（英文）数学题。请解释题意，回答并解释为什么。

The table shows the results of a poll which asked drivers how many accidents they had had over the previous 5 years. What is the median number of accidents per driver?

A. 0.5
B. 1
C. 1.5
D. 2
E. 4

Answer 1

翻译：
下面的表格是一个关于过去五年内交通事故数量的对司机的调查表。试问，每个司机
交通事故数的中位数是什么？
显然是C

追问

为什么是C？请解释！

追答

这里
http://baike.baidu.com/view/170892.htm

追问

If we list out in order we will write 17 zeros, 13 ones, 21 twos etc. Since there are 60 drivers, the median will come between the value for the 30th and 31st drivers. We can already see that starting at the zero end, the 30thdriver will be in the ones section of the list, but the 31st driver will be in the twos section. Hence the median is 1.5.

这是官网的答案，你答得不清不楚。我看不懂！！

Answer 2

该表是一项询问司机在过去的5年中发生多少起事故的民意调查结果。请问每位司机发生事故次数均值是什么？

A. 0.5
B. 1
C. 1.5
D. 2
E. 4

Answer 3

可以看看尚友SAT论坛~~