Question 1 • Algebra D E-Learning Fall 2023 and beyond
The values are already in order, and the middle value of the nine data points is 10, so Q2 = 10. Excluding that middle value leaves 5, 7, 7, 8 in the lower half and 11, 12, 15, 17 in the upper half. Their medians are Q1 = (7 + 7) / 2 = 7 and Q3 = (12 + 15) / 2 = 13.5, matching choice B.
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