2016新SAT5月数学答案及分析

2022-05-26 05:58:33

  新2016新SAT5月数学答案及分析。

  数学部分

  数学考题感觉没有想象中的那么简单,特别是可以使用计算器的部分,一不小心,很可能会丢分。很多题目文字较多,带图题也比较多。这次考试中90%的题目和老SAT范围相同, 但是比老SAT更容易陷入文字陷阱里。

  SAT的官方指南OG在统计学环节大大加强,新加入了标准差(Standard Deviation),抽样实验思想(Batch Test)等考察内容,并提高了对数据分析(Data Analysis) 和回归关系(Regression)的考察难度。

  建议

  在本次考试中,抽样实验和回归内容已经出现,在未来的考试中也很可能会考到标准差概念。此外,新SAT的OG在代数部分引入了对余式和因式定理的考察,通过真考和OG的高度相似性,我们有理由判断今后的考试中也可能会涉及上述知识点。

  题型和阅读表达方面,真考和OG同样体现出了题干变长和应用题比例升高的趋势。但对于准备过

  数学不可以掉以轻心

  下面是具体的SAT数学考试真题:

  SAT考试数学题目:Mathematics>Standard Multiple Choice

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

  A company sells bottles of water. Using data from a random sample of all water bottles, the mean volume, in liters, of water per bottle is 0.96. The margin of error for this estimation is 0.08 liters of water. Which of the following is the most appropriate claim to make based on this sample?

  A.The company always fills its water bottles with less than 1 liter of water.

  B.The company always fills its water bottles with between 0.96 liters and 1.04 liters of water.

  C.The company always fills its water bottles with between 0.88 liters and 1.04 liters of water.

  D.It is plausible that the mean volume of all bottles sold by the company is in the range 0.88 liters to 1.04 liters.

  答案:D

  解析:

  Option D is correct. The margin of error is associated with the mean estimate for all the water bottles based on the mean of the sample bottles so it is likely that the mean volume of all bottles is between 0.96 minus 0.08 and 0.96 plus 0.08 liters, or between 0.88 and 1.04 liters.

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