问题
单项选择题
由定距尺度计量形成的统计数据是（）
A．定量数据
B．分类数据
C．顺序数据
D．定性数据
答案
参考答案：A
解析：
本题用排除法选择最好。
搜题请搜索小程序“爱下问搜题”
由定距尺度计量形成的统计数据是（）
A．定量数据
B．分类数据
C．顺序数据
D．定性数据
参考答案：A
解析：
本题用排除法选择最好。
| 阅读理解。 |
| John is a paper boy. He delivers(投递)newspapers to different houses in his street every day. He has about 80 customers(客户). Half of his customers only take the newspapers on weekdays, and about half take the newspapers on weekdays and on Sundays. Two of John’s customers only take the newspapers on Sundays. John has to get up at 4：30 every morning to deliver his newspapers. It takes longer to deliver the newspapers on Sundays. The Sunday newspapers are twice as heavy as those on weekdays. John is saving his money to buy a new bicycle. He is also saving money for college (大学). He has already saved 500 dollars. 1. John ________________ every day. A. reads books B. sells newspapers C. borrows books D. delivers newspapers 2. How many customers does he have? A. About 40. B. About 120. C. About 80. D. About 20. 3. ______________ of his customers only take the newspapers on Sundays. A. Two B. Eighty C. Forty D. Twenty 4. What time does he have to get up every morning? A. 3：30 B. 4：30 C. 5：30 D. 6：30 5. John is saving his money to buy __________________. A. a newspaper B. a new bag C. a house D. a new bicycle |