The five-number summary of a data set is given. Minimum: 3 cap q sub 1 : 12 Median: 15 cap q sub 3 : 16 Maximum: 20 Which of the following equals 1 point 5 times IQR ?
Answer
A
9
B
1 point 5
C
4 point 5
D
6
Explanation
The interquartile range is Q3 − Q1 = 16 − 12 = 4. Then 1.5 times the IQR is 1.5 × 4 = 6, so the correct choice is 6.
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