medium · SAT Math
A box plot summarizes delivery times (in minutes) for 120 orders at a restaurant: minimum = 12, first quartile (Q1) = 30, median = 38, third quartile (Q3) = 46, maximum = 64.
Using the 1.5×IQR rule, what is the lower fence — the value below which a delivery time would be classified as an outlier?
- 22 minutes
- 14 minutes
- 6 minutes
- -48 minutes
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