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, De cem ber 9, 2005). In the poll, 1002 adults were surveyed. Two of the questions and the summarized responses to these questions follow:

How widespread do you think corruption is in public service in America?

Hardly anyone 1%

A small number 20%

A moderate number 39%

A lot of people 28%

Almost everyone 10%

Not sure 2%

In general, which elected of fi cials would you say are more ethical?

Democrats 36%

Republicans 33%

Both equally 10%

Neither 15%

Not sure 6%

a. For each question, construct a pie chart summarizing the data.

b. For each question, construct a segmented bar chart displaying the data.

c. Which type of graph (pie chart or segmented bar graph) does a better job of presenting the data?

Explain.