Question: A graphrepresenting a statistical process control chart for the production of gnomes. aWhat are the functionsof lines x, y and -y shown in the controlchart

A graphrepresenting a statistical process control chart for the production of gnomes.

  1. aWhat are the functionsof lines x, y and -y shown in the controlchart and how are they set?
  2. What recommendation would you make if you saw the resultsshown in the chart?
  3. How are control limits likely to be affectedby the size of the sample taken andthe variability of the production process?
  4. Explain whetheror not ideas of SPC have had an effecton statistical qualityanalysis control techniques?

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