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Stem Plot Exam Grades Sec 2
Q1 = 69.5, Q3 = 85.
IQR = Q3 – Q1 = 85 – 69.5 = 15.5
1.5xIQR = 1.5x 15.5 = 23.25
Q1 – 1.5IQR = 69.5 – 23.25 = 46.25
Q3 + 1.5IQR = 85 + 23.25 = 108.25.
Conclusion: