At a Sawmill in Oregon, a Process Improvement Team Measured

Multiple Choice

At a sawmill in Oregon, a process improvement team measured the diameters for a sample of 1,500 logs. The following summary statistics were computed: Given this information, for a box and whisker plot which of the following statements is appropriate?

A) Seventy-five percent of the trees in the sample have values between 8.9 in. and 15.6 in.
B) Virtually all of the data should fall between 0 in. and 25.65 in.
C) No tree will have a diameter of more than 22.3 in.
D) Fifty percent of the trees will have diameters between 13.5 in. and 15.6 in.