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Pksc 4300: Stats 4 - Process Capability Exam Questions And Correct Detailed Answers With Complete Solutions | Graded A+

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PKSC 4300: Stats 4 - process capability exam

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PKSC 4300: Stats 4 - process capability exam

What is a specification?: a defined requirement for a process or product property


What are good specification?: - its clearly understandable


a relevant requirement
is measurable with an agreed upon standard test method
has realistic and achievable limits
!!! based on statistics and normal distribution

What are bad specification?: - requirements exceed current state of art equipment


have imbalanced tolerances

How statistical tool with provide good specifications?: 1) Process capability index, C_p


2) C_pk

What is the purpose of the process capability index?: a tool for predicting the ability of a


process to meet a specification when the center of variation and center of specification are the same

How do you calculate a process capability index?: C_p = (USL - LSL)/(6*standard deviation)


USL=upper specification limit
LSL=lower specification limit

What does C_p > 1 mean?: Process is capable of matching specification

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