2016 AP Statistics統計學真題Practice Exam系列之選擇題免費下載

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2016 AP Statistics Practice Exam Multiple Choice Questions Free Download

2016 AP統計學模考選擇題部分免費下載

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4）A company determines the mean and standard deviation of the number of sick days taken by its employees in one year. Which of the following is the best description of the standard deviation?

1. Approximately the mean distance between the number of sick days taken by individual employees and the mean number of sick days taken by all employees
2. Approximately the median distance between the number of sick days taken by individual employees and the median number of sick days taken by all employees
3. The distance between the greatest number of sick days taken by an employee and the mean number of sick days taken by all employees
4. The number of days separating the fewest sick days taken and the most sick days taken when considering all employees
5. The number of days separating the fewest sick days taken and the most sick days taken when considering the middle 50 percent of the distribution

6) A local television news station includes a viewer survey question about a current issue at the beginning of every evening news broadcast. Viewers are invited to use social media to respond to the question. The results of the survey are shared with the audience at the end of each broadcast. In relation to the opinions of the population of the region, which of the following is a possible reason why the results of such surveys could be biased?

1. Viewers with strong opinions about the current issue are more likely to respond than are viewers without strong opinions.
2. The opinions of viewers of one television station are not necessarily representative of the population of a region.
3. ?Viewers with access to social media are not necessarily representative of the population of a region.

1. I only
2. II only
3. III only
4. II and III only
5. I, II, and III

7) A graduate student conducted a study of field mice in rural Kansas. The student obtained a sample of 100 field mice and recorded the weight, in grams, of each mouse. After the measurements were taken, it was discovered that the scale was not calibrated correctly. The student adjusted the 100 recorded measurements by subtracting 3 grams from each measurement. Which of the following statistics for the weight, in grams, of the field mice has the same value before and after the adjustment?

1. The median
2. The mean
3. The first quartile
4. The third quartile
5. The interquartile range

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