The design specification width is 1.25mm and the process width at 6 standard deviations is .85mm. What is the process capability index ratio?Multiple Choice1.47.40.681.65
Question
The design specification width is 1.25mm and the process width at 6 standard deviations is .85mm. What is the process capability index ratio?Multiple Choice1.47.40.681.65
Solution
The process capability index (Cp) is a statistical measure of a process's ability to produce output within specification limits. It is calculated by dividing the specification width by the process width at 6 standard deviations.
In this case, the specification width is 1.25mm and the process width at 6 standard deviations is 0.85mm.
So, the process capability index (Cp) is calculated as follows:
Cp = Specification Width / Process Width at 6 standard deviations Cp = 1.25mm / 0.85mm Cp = 1.47
So, the process capability index ratio is 1.47.
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