Review the information provided in the graph to answer each question below.
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(This activity contains 5 questions.)
1. Based on this figure, estimate the number of adults in the United States who are infected with HIV. Explain how you arrived at that number.
2. Can you identify which countries have the largest number of adults infected with HIV? Explain your answer.
3. From this figure, can you conclude that there are twice as many adults infected with HIV in the United States as there are in Canada? Explain your answer.
4. What can you conclude about the HIV infection rates in South America relative to the infection rates in southern Africa?
5. Each of the first three colored bars covers a range of less than 1 percentage point, while the darkest red bar covers almost 15 percentage points. Why? How might this difference mislead a reader? Why might this be a useful way to present the data?
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