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Chapter 3 Displaying and Describing Categorical/Qualitative Data Constructing Bar and Pie Charts Example The following data from the 2000 U.S. Census lists the maximum level of education for Americans over 65. Create two different appropriate displays for the data and write a few sentences describing any patterns. Education Level Count(thousands) No high school diploma 9945 HS graduate but no college 11701 Some college no degree 4481 2-year degree 1390 4-year degree 3133 Master's degree 1213 PhD or Professional degree 757 Example A 2001 poll found that many Americans believe in ghosts and other supernatural phenomena. The poll was based on 1012 randomly selected adults. The table shows the percentages of people who expressed belief in various phenomena. Percent expressing Phenomenon belief Psychic healing 54 ESP 50 Ghosts 38 Astrology 28 Channeling 15 a) Is it reasonable to conclude that 66% of those polled expressed belief in either ghosts or astrology? Explain. b) Can you tell what percent of people did not believe in any of these phenomena? Explain. c) Is a pie chart an appropriate display for these data? Explain. d) Create an appropriate display for these data.