Question: Problem: Five samples of variable size are collected, and the compressive strengths ( in psi ) are shown in the following Table. X - bar

Problem: Five samples of variable size are collected, and the compressive strengths (in psi) are shown in the following Table. X-bar and s control charts are used to monitor the process. Calculate the centerline for the S chart only. [4 points]
\table[[Sample,Observations],[1,83,81,80,76],[2,88,78,,],[3,86,76,84,],[4,81,74,83,74],[5,84,78,,]]
Problem: Five samples of variable size are collected, and the compressive

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