The figure below presents stem-and-leaf displays for a random sample of lengths

Question

The figure below presents stem-and-leaf displays for a random sample of lengths of golf courses (yards) that have been designated by Golf Magazine as among the most challenging in the United States. Among the sample of 40 courses, the shortest is appear to be distributed in a roughly uniform fashion over the range of values in the sample. Notice that a stem choice here of either a single digit (6 or 7) or three digits (643, . . . , 728) would yield an uninformative display, the first because of too few stems and the latter because of too many yards long, and the longest is yards. The lengths Statistical software packages do not generally produce displays with multiple-digit stems. The MINITAB display in the figure on the right results from truncating each observation by deleting the ones digit. 64 |35 64 33 70 Stem: Thousands and hundreds digits 65 26 27 06 83 Leaf: Tens and ones digits 66 05 94 14 67 90 70 00 98 70 45 13 68 90 70 73 50 69 00 27 36 04 7051 05 11 40 50 22 71 31 69 68 05 13 65 72 80 09 Stem-and-leaf of yardage N= 40 Leaf Unit= 10 64 3367 65 0228 66 019 67 0147799 68 5779 69 0023 70 012455 71 013666 72 08 18 18 14

Explanation / Answer

Among the sample of 40 courses, the shortest is 6433 yards long and the longest is 7280 yards.

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