Question: Consider the following observations on shear strength (MPa) of a joint bonded in a particular manner (from a graph in the article "Diffusion of Silicon Nitride to Austenitic Stainless Steel without Interlayers," Metallurgical Trans.. 1993: 1835-1843):

1. Determine the value of the sample mean.
2. Determine the value of the sample median. Why is it so different from the mean?
3. Calculate a trimmed mean by deleting the smallest and largest observations. What is the corresponding trimming percentage? How does the value of this \(\bar{x}_{t r}\) compare to the mean and median?

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