A data set has Q1 = 22, Q3 = 38. A student wants to identify potential outliers using the 1.5×IQR rule.
According to the 1.5×IQR rule, a value is an outlier if it is below or above which thresholds?
- Acheck_circle
Below −2 or above 62
- B
Below 6 or above 54
- C
Below −16 or above 76
- D
Below 22 or above 38
Explanation
IQR = 38 − 22 = 16. Lower fence = 22 − 1.5(16) = −2. Upper fence = 38 + 1.5(16) = 62.