五月备考：今日份的数学练习题(附答案和详解)

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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。

MathematicsStandard 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.

以上就是易伯华为大家整理出来的SAT数学练习题。易伯华会一直陪在大家身边，备考SAT的宝宝们加油!