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12_13_A_Expdesig

12_13_A_Expdesig - Lecture Notes OR 282 Quality Control and...

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Lecture Notes - OR 282 Quality Control and Acceptance Sampling - Professor Thomas A. Mazzuchi - 1 EXPERIMENTAL DESIGN OVERVIEW What is DOE • a test or series of tests in which purposeful changes are made to input variables of a process so that we may observe corresponding changes in the output response Controlled Factors x ... x 1 p Æ Æ input PROCESS output y p p Å Å z ... z 1 q Uncontrolled Factors (noise) Objectives - Which variables are most influential on the response y? - Where to set x for y to be at nominal requirements µ - Where to set x for y to have minimal variance µ - Where to set x so that the effect of z on y is minimal µ µ
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