数据的波动

Flashcard
•
Mathematics
•
8th Grade
•
Hard
Erfu Liu
Used 1+ times
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10 questions
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1.
FLASHCARD QUESTION
Front
Which set of data has the largest variance? Options: 1,2,3,4,5, 6,7,9,10,11, 21,23,25,27,29, 33,35,37,39,41
Back
6,7,9,10,11
2.
FLASHCARD QUESTION
Front
在甲、乙两位射击运动员的 10 次考核成绩中,两人的考核成绩的平均数相同,方差分别为 S2甲=1.45, S2乙=0.85,则考核成绩更为稳定的运动员是?
Back
乙
3.
FLASHCARD QUESTION
Front
Which athlete's performance is the most stable based on the following scores?
Athlete A: 9, 10, 8, 5, 7, 8, 10, 8, 8, 7
Athlete B: 5, 7, 8, 7, 8, 9, 7, 9, 10, 10
Athlete C: 7, 6, 8, 5, 4, 7, 6, 3, 9, 5
Back
Athlete A
4.
FLASHCARD QUESTION
Front
In a basketball shooting test, two students, A and B, each took five sets of 10 shots. A's scores: 9, 9, 9, 6, 7. B's scores: 4, 9, 8, 9, 10. If you were the sports teacher, which student would you choose to compete?
Back
A
5.
FLASHCARD QUESTION
Front
某篮球队5名场上队员的身高(单位:cm)是168,184,187,188,197. 现用一名身高为178 cm的队员换下场上身高为197 cm的队员,与换人前相比,场上队员的身高变化如何?
Back
平均数变小,方差变小
6.
FLASHCARD QUESTION
Front
已知一组数据 x,1,5,4,8,平均数是5,方差是6,x= ( )
Back
7
7.
FLASHCARD QUESTION
Front
小华根据演讲比赛中九位评委所给的分数制作了表格,如果要去掉一个最高分和一个最低分,表中数据一定不发生变化的是?选项:平均数, 众数, 方差, 中位数
Back
中位数
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