出现字母的个数 | 100 | 150 | 200 | 250 | 300 | 350 | 400 |
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科目:初中数学 来源: 题型:
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科目:初中数学 来源: 题型:044
电脑键盘上的字母为何不按顺序排列?请你来做一项统计,下面是一篇小短文,根据短文中字母a,b出现的机会完成后面提出的问题:
Two TripsJack brought a small plane and began to fly it. He soon became excited and made his plane all kinds of tricks.
Jack had a friend, named Tom. One day Jack said to him,“I will pick you up in my plane.” “I will be glad to.”answered Tom. They went up, and Jack flew around for half an hour and did all kinds of tricks in the air. Then they came down. Tom was to be back safely, and said to Jack, “Well,Jack,thank you very much for those two trips in your plane.” Jack was very surprised and asked,“Two trips?” “Yes, my first and my last.” answered Tom.
(1)根据上文填表:
(2)请在图中画出折线统计图,并根据你做的统计写出至少两种结论.
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科目:初中数学 来源:不详 题型:解答题
出现字母的个数 | 100 | 150 | 200 | 250 | 300 | 350 | 400 |
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科目:初中数学 来源:《33.1 用列举法求概率》2010年习题精选(解析版) 题型:解答题
出现字母的个数 | 100 | 150 | 200 | 250 | 300 | 350 | 400 |
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出现字母b的频率 |
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