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CLSSBB – Certified Lean Six Sigma Black Belt

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Showing 4–6 of 15 questions

Question 4

Which statement(s) are correct about the Regression shown here? (Note: There are 2 correct answers).

Select all that apply, then click Submit answer.

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    The dependent variable is the outside temperature
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    The relationship between outside temperature and number of customers per hour is a Linear Regression
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    The dashed lines indicate with 95% confidence where all of the process data should fall between
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    The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line
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    The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C

Question 5

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

Select all that apply, then click Submit answer.

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    When the cutting speed increased from low to high level, the tool age increases
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    The coefficient of the metal hardness is positively related to the output of tool age
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    The coded coefficient is lower for cutting speed than the cutting angle related to the output of tool age
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    These plots prove a statistically significance factor with 95% confidence
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    These plots are an example of interaction plots
Question 6

Review the analysis shown there.

Which statements are true about the process? (Note: There are 3 correct answers).

Select all that apply, then click Submit answer.

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    The initial focus for this project would be to determine why the thicknesses are so frequently too low.
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    The majority of the process is closer to the lower specification limit.
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    This process is described with the Weibull Distribution.
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    The process has more problems with Variation than Centering.
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    The process follows a non-normal distribution with the given data.