Lean Six Sigma Yellow Belt Certification The Measure Phase 3

Question 1

The Cp index measures process capability without regard to centering. What additional index accounts for process centering?

Accepted Answer

Cpk

Answer

Cpk adjusts for the process mean's location relative to the specification limits, penalizing a process that is off-center.

Question 2

Which tool is used in the Measure phase to visually show where defects occur on a physical product or diagram?

Accepted Answer

Defect concentration diagram (measles chart)

Answer

A defect concentration diagram (measles chart) marks defect locations on a drawing of the product to reveal spatial patterns.

Question 3

When establishing a baseline process capability, which condition must be met first?

Accepted Answer

The process must be in statistical control

Answer

Process capability indices are only meaningful when the process is stable (in statistical control), otherwise capability calculations are invalid.

Question 4

A box plot (box-and-whisker plot) displays all of the following EXCEPT:

Accepted Answer

Exact raw data values

Answer

Box plots summarize the distribution showing median, quartiles, range, and outliers, but they do not display individual raw data values.

Question 5

In process mapping during the Measure phase, a 'value-added' step is one that:

Accepted Answer

Transforms the product in a way the customer cares about and would pay for

Answer

A value-added step physically transforms the product or service in a way the customer recognizes and is willing to pay for.

Lean Six Sigma Yellow Belt Certification Practice Test