One Way ANOVA and Two Way ANOVA for GR&R Study

hazwan2283

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Hi Everyone,
I am Hazwan and i would like to kindly ask a question.
Main Question: How do i choose whether to do GR&R study using One-Way ANOVA or Two-Way ANOVA?.
I tried googling this for long time, attached an image but i still dont understand how do i know which one to choose from.

Kindly somebody please help.
 

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Miner

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Use a 2-way ANOVA with Operators and Parts as your two factors and the Operator * Part interaction.
 
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