Question

電腦鍵盤上的字母為何不按順序排列?請你來做一項統(tǒng)計，下面是一篇小短文，根據(jù)短文中字母a，b出現(xiàn)的機會完成后面提出的問題：

Two Trips

　　Jack 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)根據(jù)上文填表：

(2)請在圖中畫出折線統(tǒng)計圖，并根據(jù)你做的統(tǒng)計寫出至少兩種結論．

Answer 1

答案：略
解析：

解：(1)略；(2)出現(xiàn)字母a的頻率比出現(xiàn)字母b的頻率大；隨著出現(xiàn)字母的個數(shù)的增加，出現(xiàn)字母a(或b)的頻率趨于某一范圍．