Statisticsmedium · Past Paper
Calculate the Upper Quartile (Q3) for the following data: 10, 15, 20, 25, 30, 35, 40.
A25
B30
C35
D40
✓ Correct Answer: C — 35
N=7. Q3 position = 3(N+1)/4 = 3(8)/4 = 6th item. The 6th item is 35.
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