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Question 1
A Six Sigma Black Belt is analyzing customer satisfaction scores (on a 1-10 scale) for three different service centers (A, B, C). The data is not normally distributed, and a test for equal variances has failed. Which non-parametric test is most appropriate to determine if there is a statistically significant difference in the median satisfaction scores among the three centers?
Correct Answer:
Kruskal-Wallis Test
Question 2
A project team is investigating the relationship between the type of raw material supplier (four suppliers, a categorical variable) and the occurrence of a specific defect (present/absent, a categorical variable). Which statistical test should be used to determine if there is a significant association between the supplier and the defect rate?
Correct Answer:
Chi-Square Test of Independence
Question 3
When performing an Analysis of Variance (ANOVA), a key assumption is the homogeneity of variances. If a Black Belt suspects the data may not be normally distributed, which test is more robust for verifying the equality of variances among the groups?
Correct Answer:
Levene's Test
Question 4
A Black Belt wants to analyze the effect of a new training program (a categorical factor with two levels: 'New' and 'Old') on employee productivity (a continuous variable). However, they know that an employee's prior experience (a continuous variable, measured in months) also significantly impacts productivity. To isolate the effect of the training program while accounting for the influence of prior experience, which statistical technique is most appropriate?
Correct Answer:
Analysis of Covariance (ANCOVA)
Question 5
In a multiple regression analysis, a Six Sigma team is concerned about multicollinearity. Which of the following is the BEST indicator that multicollinearity is a problem in their model?
Correct Answer:
High Variance Inflation Factor (VIF) values for predictor variables.
Question 1
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About this Exam

Prepare with the ASQ Certified Six Sigma Black Belt (CSSBB) Exam practice quiz. This question bank includes 150 questions covering sigma, black, belt, team, and hypothesis. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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ASQ Certified Six Sigma Black Belt (CSSBB) Exam

This practice set contains 150 questions from the matching question bank and focuses on sigma, black, belt, team, and hypothesis. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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