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标题: 涛涛套题里一个关于中位数的题求解答啊~~ [打印本页]

作者: naryi 时间: 2012-9-5 00:06
标题: 涛涛套题里一个关于中位数的题求解答啊~~
Q3:

Each of the 45 boxes on shelf J weighs less than each of the 44 boxes on shelf K. What is the median weight of the 89 boxes on these shelves?

(1) The heaviest box on shelf J weighs 15 pounds.

(2) The lightest box on shelf K weighs 20 pounds.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

答案是A。
知道J架子上最重的是15pound,咋能得出median weight呢？？

求大家帮助，谢谢！

作者: 我就是来卖萌的 时间: 2012-9-5 01:58
因为J上最重的那个正好就是中位数。

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