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??