如圖,為甲班國文競試成績的次數分配直方圖,則未滿 60 分的人數占全部的百分比?
11302遠距教學_統計_後測

Quiz
•
Mathematics
•
12th Grade
•
Hard
陳 品妍
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
22%
33%
44%
50%
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知某項考試共有 3600 人應考,考試成績近似常態分配,如圖所示,又考試成績的平均分數 μ 為 65 分,標準差 σ 為 10 分。若成績高於 85 分的人數為 x,則下列何者正確?
x ≤ 50
51 ≤ x ≤ 150
151 ≤ x ≤ 250
251 ≤ x ≤ 350
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如圖為某班 20 位學生數學期末考成績的以上累積次數分配折線圖,則成績在 70 ~ 90 分的人數為何?
6
5
2
1
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
小寶在夜市玩射氣球遊戲 20 次,其得分結果如下,試求中位數與眾數
中位數 15
眾數 15
中位數 20
眾數 15
中位數 15
眾數 30
中位數 17.5
眾數 15
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若抽樣數值資料為 2、4、6、7、8、15,則其樣本標準差為何?
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