[計量] 一題PP2請教(已爬文)
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
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