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Year 11 General Univariate Data Analysis

Boxplots

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Question 1
177831

The boxplot below shows the maths test scores (out of 30) for a class of Year 11 students at a Brisbane school.


(i) State the median score.
(ii) State the lower quartile (Q₁) and upper quartile (Q₃).
(iii) Calculate the IQR.
(iv) Calculate the range.
(i) Median = 14. (ii) Q1 = 10, Q3 = 20. (iii) IQR = 10. (iv) Range = 24.

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