Answer:
Mean = 12.85714
Median = 15
Range = 15
Explanation:
Mean:
5 + 15 + 10 + 20 + 15 + 10 + 15 = 90
90 / 7 = 12.85714
Median:
5, 10, 10, 15, 15, 15, 20
Range:
20 - 5 = 15
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