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2018年SAT考试数学备考练习题(20)

2018-04-03 17:44:00来源:网络

  新东方在线SAT频道为大家带来2018年SAT考试数学备考练习题,希望对大家SAT备考有所帮助。更多精彩尽请关注新东方在线SAT频道!

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

  An online video gaming site with 20 million registered users ages 8 and older wants to find out the average number of hours that all of its registered users spend playing offline video games each week. The site administerwd an online survey to 10 comma 000 of its registered users ages 16 through 18, selected at random. The survey asked the question, "How many hours do you spend playing offline video games each week?" The data collected showed that the mean number of offline gaming hours per user was 8.3 hours per week. What characteristic of the survey prevents these results from being generalized to all of the site's users?

  A.The age criteria for selecting the users who were surveyed

  B.The size of the sample

  C.The method used to analyze the data

  D.The size of the population

  【答案解析】

  答案:A

  解析:

  Option A is correct. The results can be generalized only to the population that was randomly sampled.

  以上就是新东方在线SAT频道为你带来的2018年SAT考试数学备考练习题,更多精彩敬请关注新东方在线SAT频道。

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本文关键字: SAT备考数学 SAT数学 2018SAT

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