Which Statement(s) Are Correct About the Factorial Plot Shown Here

question 182

Multiple Choice

Which statement(s) are correct about the Factorial Plot shown here? (Note: There are 3 correct answers) .  

• A) When the cutting speed increased from low to high level, the tool age increases
• B) The coefficient of the metal hardness is positively related to the output of tool age
• C) The coded coefficient is lower for cutting speed than the cutting angle related to the output of tool age
• D) These plots prove a statistically significance factor with 95% confidence
• E) These plots are an example of interaction plots

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