A paper by R.N. Rodriguez (Health Care Applications of Statistical Process Control: Examples Using the SAS® System,
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The variable NYRSE can be thought of as an inspection unit, representing an identical area of opportunity for each sample. The process characteristic to be controlled is the rate of office visits. A u chart which monitors the average number of office visits per NYRSB is appropriate.
(a) Use the data from Phase 1 to construct a control chart for monitoring the rate of office visits performed at clinic E. Does this chart exhibit control?
(b) Plot the data from Phase 2 on the chart constructed in part (a). Is there a difference in the two phases?
(c) Consider only the Phase 2 data. Do these data exhibit control?
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Related Book For
Introduction to Statistical Quality Control
ISBN: 978-1118146811
7th edition
Authors: Douglas C Montgomery
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