A poll conducted by the Associated Press-Ipsos on public attitudes found that most Americans are convinced that political corruption is a major problem (San Luis Obispo Tribune, December 9, 2005). In the poll, 1002 adults were surveyed. Two of the questions and the summarized responses to these questions follow:
| Hardly anyone |
1% |
| A small number |
20% |
| A moderate number |
39% |
| A lot of people |
28% |
| Almost everyone |
10% |
| Not sure |
2% |
How widespread do you think corruption is in public service in America?
a. Construct a stem-and-leaf display for these data using the thousands digit as the stem. Comment on the various features of the display.
b. Construct a histogram using class boundaries of 0 to,1000, 1000 to ,2000, and so on. How would you describe the shape of the histogram?
c. What proportion of subdivisions has total length less than 2000? between 2000 and 4000?