The article "The Healthy Kids Survey: A Look at the Findings" (San Luis Obispo Tribune, October 25, 2002) gave the accompanying information for a sample of fifth graders in San Luis Obispo County. Responses are to the question: "After school, are you home alone without adult supervision?"
a. Summarize these data using a pie chart.
b. Construct a segmented bar graph for these data.
c. Which graphing method-the pie chart or the segmented bar graph-do you think does a better job of conveying information about response? Explain.