Process capability ratio (PCR and PRCk)

E. C. de Oliveira @E_Oliveira2

01 January 1970 1 9K Report

Are all "Process capability ratio" (PCR and PRCk) calculated wih 6 sigma or other confidence levels can be used?

Yours sincerely,

Elcio Oliveira

E. C. de Oliveira

In fact, I want to know if the parameters to evaluate the system performance:

PCRk < 1
1 < = PCRk < = 1.33
PCRk > 1.33.

Can be used to 4 sigma, for instance, instead of 6 sigma.

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Science method

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