The dean of the College of Business at Local University wants to monitor the quality of the work performed by the college€™s administrative staff. Each completed assignment is returned to the faculty with a check sheet on which the faculty member is asked to list the errors made on the assignment. The assistant dean randomly collects the following set of observations from 20 three-day work periods:

Construct a process control chart for administrative work quality using 3σ limits and determine if the process was out of control at any point. Use pattern tests to determine if any non-random patterns exist.

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Sample Number of Errors 17 3 12 4 15 26 6. 11 18 8. 15 21 10 10 11 12 12 17 13 16 14 23 15 24 16 18 17 14 18 12 19 20 20 16