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

A negative Cpk means the process mean has shifted beyond one of the specification limits, indicating the process is producing mostly defective output.

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

A measurement system contributing 45% of variation is unacceptable and must be improved before reliable process data can be collected.

Question 3

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

Accepted Answer

Inventory

Answer

Excess WIP between process steps is classified as inventory waste, one of the eight wastes in lean methodology.

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

The Box-Cox transformation applies a power function to data to make it more closely follow a normal distribution for valid statistical analysis.

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

Part-to-part variation captures the differences among individual units produced under similar conditions at roughly the same time.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

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