Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt Analyze Phase Tools Questions and Answers 2

Question 1

Which graphical tool displays the relationship between two continuous variables to identify correlation patterns?

Accepted Answer

Scatter diagram

Answer

A scatter diagram plots paired data points to visually reveal the direction and strength of correlation between two variables.

Question 2

What is the primary purpose of a hypothesis test in the Analyze phase?

Accepted Answer

To determine if observed differences are statistically significant

Answer

Hypothesis testing uses statistical evidence to determine whether observed differences or effects are real or due to random chance.

Question 3

In a chi-square test, what type of data is being analyzed?

Accepted Answer

Categorical data

Answer

The chi-square test evaluates whether there is a significant association between two categorical variables.

Question 4

What does a correlation coefficient of -0.92 indicate about two variables?

Accepted Answer

Strong negative linear relationship

Answer

A correlation coefficient near -1.0 indicates a strong negative linear relationship where one variable increases as the other decreases.

Question 5

Which tool helps identify the vital few causes from the trivial many in defect analysis?

Accepted Answer

Pareto chart

Answer

A Pareto chart applies the 80/20 rule to rank causes by frequency, highlighting the vital few that contribute most to the problem.

Lean Six Sigma Green Belt Certification Practice Test