What is a Range in the Control Chart ?

Skill/Topic: Statistical Process Control
A) Range is the difference between the Highest observation in the Sample to the Lowest obervation in the sample
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Sujatars

  • Dec 6th, 2006
 

Accepted practice uses a width of three standard deviations around the population mean (? ? 3) to establish the control limits for control chart.Anything that falls between the range of (? ? 3) is teh common cause of variation & anything that falls out of the range of (? ? 3) is special cause of variation

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ameena

  • Aug 11th, 2016
 

Range is the difference between observed high sample to low sample value

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Himansu mohanty

  • Aug 25th, 2017
 

USL - LSL

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