The following data are the number of spelling errors detected for every 1000 words on a news
Question:
(a) What control chart is most appropriate for these data?
(b) Using all the data, compute trial control limits for the chart in part (a), construct the chart, and plot the data.
(c) Determine whether the process is in statistical control. If not, assume that assignable causes can be found and out-of-control points eliminated. Revise the control limits.
Transcribed Image Text:
No. of Spelling Errors No. of Spelling Errors Week Week 1 11 1 2 12 3 13 4 14 8. 9. 15 6. 16 2 17 13 8. 18 3 3 19 10 20
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a The U chart is appropriate for these data b The U chart follows c ...View the full answer
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Related Book For
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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