试题与答案

为参加电脑汉字输入比赛,甲和乙两位同学进行了6次测试,成绩如下表:第1次第2次第

题型:选择题

题目:

为参加电脑汉字输入比赛,甲和乙两位同学进行了6次测试,成绩如下表:
第1次第2次第3次第4次第5次第6次平均数方差
1341371361361371361361.0
135136136137136136136
甲和乙两位同学6次测试成绩(每分钟输入汉字个数)及部分统计数据表有四位同学在进一步算得乙测试成绩的方差后分别作出了以下判断,其中说法正确的是(  )
A.甲的方差大于乙的方差,所以甲的成绩比较稳定
B.甲的方差小于乙的方差,所以甲的成绩比较稳定
C.乙的方差小于甲的方差,所以乙的成绩比较稳定
D.乙的方差大于甲的方差,所以乙的成绩比较稳定

答案:

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John and Bobby joined a wholesale company together just after graduation from college the same year.Both worked very ____.After several years, however,the boss ____ Bobby to the position of manager but John remained a(n) ____ employee.John could not take it anymore,handed in his resignation to the boss and ____ the boss did not value hard­working staff,but only promoted those who flattered (奉承) him.
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