Certified Six Sigma Black Belt Exam FREE Certified Six Sigma Black Belt Questions and Answers 3

Question 1

What does a negative Cpk value indicate about a process?

Accepted Answer

The process mean lies outside the specification limits

Answer

The process is highly capable

Answer

The specification limits are too wide

Answer

The process variation is zero

Question 2

During the Measure phase, a Black Belt discovers the measurement system accounts for 45% of total observed variation. What should be done first?

Accepted Answer

Improve the measurement system before collecting process data

Answer

Proceed to the Analyze phase with current data

Answer

Increase the sample size to compensate

Answer

Switch to attribute data collection

Question 3

Which lean waste category does excess Work-In-Process inventory between process steps represent?

Accepted Answer

Inventory

Answer

Overproduction

Answer

Waiting

Answer

Overprocessing

Question 4

What is the purpose of a Box-Cox transformation in Six Sigma analysis?

Accepted Answer

To transform non-normal data to approximate normality

Answer

To identify outliers in the dataset

Answer

To reduce multicollinearity among predictors

Answer

To calculate process capability indices

Question 5

In a multi-vari study, which source of variation occurs between different parts produced at approximately the same time?

Accepted Answer

Part-to-part variation

Answer

Temporal variation

Answer

Positional variation

Answer

Cyclical variation

Question 6

A Black Belt wants to determine if there is a linear relationship between temperature and yield. Which tool is most appropriate?

Accepted Answer

Simple linear regression

Answer

Chi-square test of independence

Answer

Two-sample t-test

Answer

Design of Experiments