CIMA BA1 · Chapter 9 · Question 9 of 11
The lower quartile of a distribution is 24 and the upper quartile is 40. What is the quartile deviation (semi-interquartile range)?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) 8
Explanation
Interquartile range = Q3 - Q1 = 40 - 24 = 16. Quartile deviation = interquartile range / 2 = 16 / 2 = 8.
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