Lean Six Sigma Black Belt Certification Basic 4

Question 1

Which risk priority ranking method used in FMEA multiplies Severity, Occurrence, and Detection ratings together?

Accepted Answer

Risk Priority Number (RPN)

Answer

The Risk Priority Number (RPN) = Severity × Occurrence × Detection, and is used to prioritize failure modes for corrective action in FMEA.

Question 2

A scatter plot shows a correlation coefficient (r) of −0.92. What does this indicate?

Accepted Answer

Strong negative relationship

Answer

A correlation coefficient of −0.92 indicates a strong negative linear relationship — as one variable increases, the other decreases substantially.

Question 3

Which Lean tool uses visual signals (cards or bins) to authorize and trigger production or material replenishment?

Accepted Answer

Kanban

Answer

Kanban is a pull-based scheduling system that uses visual signals to authorize replenishment of materials or production only when needed.

Question 4

In regression analysis, what does R² (coefficient of determination) measure?

Accepted Answer

The proportion of variance in Y explained by X

Answer

R² represents the proportion of the total variance in the response variable (Y) that is explained by the predictor variable(s) in the regression model.

Question 5

The concept of 'Design for Six Sigma' (DFSS) is most closely associated with which methodology?

Accepted Answer

DMADV

Answer

DMADV (Define, Measure, Analyze, Design, Verify) is the DFSS methodology used to design new products or processes to Six Sigma capability from the start.

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification Basic 4