Question: 2.1 Pulling wood apart. Example 1.9 (page 17) gives the breaking strength in pounds of 20 pieces of Douglas fir. Find the mean breaking strength.

2.1 Pulling wood apart. Example 1.9 (page 17) gives the breaking strength in pounds of 20 pieces of Douglas fir. Find the mean breaking strength. How many of the pieces of wood have strengths less than the mean? What feature of the stemplot (Figure 1.11, page 18)

explains the fact that the mean is smaller than most of the observations?

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