推 tecoteco:avg越小不代表個數越少 若考慮sum<0 則此題答案應該是E 03/15 19:48
The sum of the integers in list S is the same as the sum of the integers in
list T. Does S contain more integers than T ?
(1) The average (arithmetic mean) of the integers in S is less than the
average of the integers in T.
(2) The median of the integers in S is greater than the median of the
integers in T.
答案 A
請問一下各位
sum=avg*個數
在avg和sum是正數的情況下，
avg越小，個數就越多，這部分沒問題；
但若遇到sum<0情況時，情況會完全相反，
sum<0 必定avg<0
avg越小 個數就越少
這樣有兩種解釋，是否還符合資料充分性嗎??
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