Answer:
The IQR or the interquartile range of the following data set would be 4.
Explanation:
2, 2, 3, 3, 4, 5, 5, 6, 7, 9, 12
Median: 5
Lower quartile: 3
Upper quartile: 7
Interquartile range: 7 - 3 = 4
d: Twelve is not an outlier because it is less than the sum of 7 and 6.
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