The stem-and-leaf display gives the waiting times (minutes) of 12 patients at a clinic in Nagpur. Taking Q1 and Q3 as the medians of the lower six and upper six times, find the interquartile range.

Question

Accepted Answer

15.5 min. Times: 23, 27, 29, 31, 34, 34 | 38, 42, 45, 46, 50, 57. Q1 =29+31/2=30, Q3 =45+46/2=45.5. IQR =15.5 min. (34 min is the range.)

The stem-and-leaf display gives the waiting times (minutes) of 12 patients at a clinic in Nagpur. Taking Q1 and Q3 as the medians of the lower six and upper six times, find the interquartile range.

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