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To find the relative frequency for each blood type, we first sum up the frequencies: 10 + 4 + 2 + 9 = 25.
Now, we can calculate the relative frequency for each blood type by dividing the frequency for that type by 25 and multiplying by 100 to get the percentage:
- Type A: 10/25 * 100 = 40%
- Type B: 4/25 * 100 = 16%
- Type AB: 2/25 * 100 = 8%
- Type O: 9/25 * 100 = 36%
Now, in the percent bar graph, the bars for Type A and Type B should go up to 40% and 16% respectively.