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SAT官方每日一题附答案和解析[数学](2020年7月3日)

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Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

A consumer-monitoring service wants to determine television viewing habits among 18- to 29-year-olds in a particular city. Which of the following survey methods is most likely to produce valid results?

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 computer camp 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 sport in high school.
D.Select a random sample of 1000 18- to 29-year-olds in that city who played chess in high school.

重点单词   查看全部解释    
survey [sə:'vei]

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v. 调查,检查,测量,勘定,纵览,环视
n.

 
involve [in'vɔlv]

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vt. 包含,使陷入,使忙于,使卷入,牵涉

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population [.pɔpju'leiʃən]

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n. 人口 ,(全体)居民,人数

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representative [repri'zentətiv]

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adj. 代表性的,代议制的,典型的
n. 代

 
produce [prə'dju:s]

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n. 产品,农作物
vt. 生产,提出,引起,

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unbiased ['ʌn'baiəst]

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adj. 公正的

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randomly ['rændəmli]

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adv. 任意地,随便地,胡乱地

 
sample ['sæmpl]

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n. 样品,样本
vt. 采样,取样

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determine [di'tə:min]

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v. 决定,决心,确定,测定

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multiple ['mʌltipl]

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adj. 许多,多种多样的
n. 倍数,并联

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