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18.表(一)是甲、乙、丙、丁四組數據。判斷哪一組數據的平均數(算術平均數)最小? (A)甲(B)乙(C)丙(D)丁
問題詳情
18.表(一)是甲、乙、丙、丁四組數據。判斷哪一組數據的平均數(算術平均數)最小?
(A)甲
(B)乙
(C)丙
(D)丁
參考答案
答案:D
難度:適中0.689655
統計:A(2),B(3),C(4),D(20),E(0)
用户評論
【用戶】
ChHautBrion
【年級】高一上
【評論內容】甲:等差數列 平均數=(80+82)÷2=81乙:(76+86)÷2=81
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