Six Sigma Lean Master Black Belt Certification Questions Part 2

Question : 23 of 40

Marks: +1, -0

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

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

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