五月备考：今日份的数学练习题(附答案和详解)
- 2018年03月28日16:00 来源：小站整理
- 参与（0） 阅读（5237）
下面我们就一起来看看这道SAT数学练习题吧，快来测试一下是否做对了。
Mathematics>Standard Multiple Choice
Read the following SAT test question and thenclick on a button to select your answer.
A consumer-monitoring service wants to determinetelevision viewing habits among 18- to 29-year-oldsin a particular city. Which of the following survey methods is most likely to produce validresults?
A.Select a random sample of 1000 18- to 29-year-olds in that city.
B.Select a random sample of 1000 18- to 29-year-olds in that city who attended a computercamp when they were in high school.
C.Select a random sample of 1000 18- to 29-year-olds in that city who played a varsity sportin high school.
D.Select a random sample of 1000 18- to 29-year-olds in that city who played chess in highschool.
答案：A
解析：
Choice A is correct. In order to produce unbiased, valid data, the sample should be randomly selectedand be representative of the entire population ofinterest. In this case, an appropriately conductedsurvey should give each consumer aged 18 to 29 years in the city an equal chance of beingsurveyed.
The choices that involve a particular high school, the chess team, and computer camperswould not be representative of the entire population of 18- to 29-year-olds in the city.
以上就是小站为大家整理出来的SAT数学练习题。小站会一直陪在大家身边，备考SAT的宝宝们加油!
