[計量] 一題PP2請教(已爬文)

看板GMAT (GMAT入學考試)作者 (Epsilon)時間15年前 (2011/05/17 17:00), 編輯推噓0(000)
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13. A certain list of 100 data has an average of 6 and a standard deviation of d, where d is positive. Which of the following pairs of data, when added to the list, must result in a list of 102 data with a SD less than d? (A) -6 and 0 (B) 0 and 0 (C) 0 and 6 (D) 0 and 12 (E) 6 and 6 A: (E) 剛去Manhattan 網站看...看不懂他們的解釋... 不知道有沒有大大能幫一下謝謝QQ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 59.115.230.10
文章代碼(AID): #1DqZaseF (GMAT)
文章代碼(AID): #1DqZaseF (GMAT)