2021 Introduction To Statitics(温州大学) 最新满分章节测试答案

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Chapter 2 Organizing and Visualizing Data online weekly quiz (week three)

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本课程起止时间为:2021-03-18到2021-07-10
本篇答案更新状态:已完结

Chapter 2 Organizing and Visualizing Data online weekly quiz (week three)

小提示:本节包含奇怪的同名章节内容

1、问题:A survey was conducted to determine how people rated the quality of programming available on television. Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. What percentage of the respondents rated overall television quality with a rating of 80 or above?
选项：
A:0
B:4
C:96
D:100
答案: 【4】

2、问题:A survey was conducted to determine how people rated the quality of programming available on television. Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. What percentage of the respondents rated overall television quality with a rating of 50 or below? Stem Leaves 3 2 3 4 0 3 4 7 8 9 9 9 5 0 1 1 2 3 4 5 6 1 2 5 6 6 7 0 1 8 9 2
选项：
A:11
B:40
C:44
D:56
答案: 【44】

3、问题:A survey was conducted to determine how people rated the quality of programming available on television. Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below. What percentage of the respondents rated overall television quality with a rating from 50 through 75? Stem Leaves 3 2 3 4 0 3 4 7 8 9 9 9 5 0 1 1 2 3 4 5 6 1 2 5 6 6 7 0 1 8 9 2
选项：
A:11
B:40
C:44
D:56
答案: 【56】

4、问题:Every spring semester, the School of Business coordinates a luncheon with local business leaders for graduating seniors, their families, and friends. Corporate sponsorship pays for the lunches of each of the seniors, but students have to purchase tickets to cover the cost of lunches served to guests they bring with them. The following histogram represents the attendance at the senior luncheon, where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category. how many graduating seniors attended the luncheon?
选项：
A:4
B:152
C:275
D:388
答案: 【275】

5、问题:Every spring semester, the School of Business coordinates a luncheon with local business leaders for graduating seniors, their families, and friends. Corporate sponsorship pays for the lunches of each of the seniors, but students have to purchase tickets to cover the cost of lunches served to guests they bring with them. The following histogram represents the attendance at the senior luncheon, where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category. If all the tickets purchased were used, how many guests attended the luncheon?
选项：
A:4
B:152
C:275
D:388
答案: 【388】

6、问题:A professor of economics at a small Texas university wanted to determine what year in school students were taking his tough economics course. Shown below is a pie chart of the results. What percentage of the class took the course prior to reaching their senior year?
选项：
A:14%
B:44%
C:54%
D:86%
答案: 【86%】

7、问题:When polygons or histograms are constructed, which axis must show the true zero or “origin”?
选项：
A:the horizontal axis
B:the vertical axis
C:both the horizontal and vertical axes
D:neither the horizontal nor the vertical axis
答案: 【the vertical axis】

8、问题:When constructing charts, the following is plotted at the class midpoints:
选项：
A:frequency histograms.
B: percentage polygons.
C:cumulative percentage polygon (ogives).
D:all of the above
答案: 【 percentage polygons.】