2014 AP Statistics统计学真题Practice Exam系列之简答题免费下载

历年AP Statistics统计学系列

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2014 AP Statistics Practice Exam Free-Response Questions Free Download

2014 AP统计学模考简答题部分免费下载

此套题仅Section II含有简答题

共计1小时30分钟，共6题

占总分50%

每道大题可能含有不同数量的小题

其中Part A建议用时1小时05分钟，共5题，占Section II总分75%

Part B建议用时25分钟，共1题，占Section II总分25%

可以使用图形计算器

考试时会提供常用公式表

完整版下载链接见文末

部分真题预览：

Part A： 1）The graph below shows the monthly average temperatures, in degrees Fahrenheit, for two cities–Madison,Wisconsin, and Juneau, Alaska–in the United States.

1. Based on the graph, compare the two cities with respect to the monthly average temperatures over the year. Address both similarities and differences in the overall patterns.
   Similarities:
   Differences:
2. For which of the two cities is the standard deviation of the 12 monthly average temperatures greater? Justify your answer without performing any calculations.

Part B： 6）The United States one-cent coin is called a penny. Banks often use a machine to count and package pennies in rolls of 50 pennies. Occasionally a machine malfunctions and begins putting fewer than 50 pennies in each roll. The quality control inspector at a certain bank wants to investigate whether its machine is functioning properly but does not want to break open the rolls to count pennies. The inspector will measure the weight of a roll of pennies to test the following hypotheses.
H₀ :The machine is putting 50 pennies in each roll.
H_a :The machine is putting fewer than 50 pennies in each roll.

1. For testing the hypotheses above, describe what a Type II error would be and describe a consequence of making a Type II error.
   Description of error:
   Consequence:
   For pennies produced since 1983, the distribution of weight is approximately normal with a mean of 2.5 grams and a standard deviation of 0.04 gram. Assume that the pennies in a roll can be considered a random sample of pennies produced since 1983.
   Let the random variable W represent the total weight of a roll of pennies. Ignore the weight of the packaging of the roll.
2. Describe the distribution of W if the selected roll contains 50 pennies.

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2014 AP Statistics Free-Response Questions Free Download

2014 AP统计学简答题部分免费下载

此套题共计1小时30分钟，共6题

占总分50%

每道大题可能含有不同数量的小题

其中Part A建议用时1小时05分钟，共5题，占Section II总分75%

Part B建议用时25分钟，共1题，占Section II总分25%

可以使用图形计算器

考试时会提供常用公式表

下载方式请访问下方链接

2014 AP Statistics FRQ真题

 

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