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Quality and Statistical Control

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Need help on finding the formula for calculating control chart limits. A manufacturer of precision machine parts produces round shaft for use in the construction of drill presses. The average diameter of a shaft is .56 inch. Inspection samples contain 6 shafts each. The average range of these samples is .006 inch. Determine the upper and lower x-bar control chart limit.

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The expert examines quality and statistical control chart limits.

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UCL = Mean + A2 x Mean of Range, LCL = Mean - A2 x Mean of ...

Solution provided by:
Gaurav Agarwal, MS
Education
  • BE, Bangalore University, India
  • MS, University of Wisconsin-Madison
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