Lean Six Sigma Black Belt Certification Lean Six Sigma Black Belt Measure Phase: Data Analysis Questions and Answers 2

Question 1

A Black Belt collects cycle time data and finds the Anderson-Darling p-value is 0.03. What should be concluded about the data distribution?

Accepted Answer

The data does not follow a normal distribution

Answer

The data follows a normal distribution

Answer

The sample size is too small to determine normality

Answer

The data follows a Weibull distribution

Question 2

Which graphical tool is most appropriate for identifying whether a process has shifted over time during the Measure phase?

Accepted Answer

Run chart

Answer

Pareto chart

Answer

Histogram

Answer

Scatter diagram

Question 3

During a Gage R&R study, the total measurement system variation accounts for 35% of the total observed variation. What action should the Black Belt take?

Accepted Answer

Improve the measurement system before proceeding with analysis

Answer

Accept the measurement system as adequate

Answer

Use the measurement system only for pass/fail decisions

Answer

Increase the sample size to compensate

Question 4

A Black Belt is analyzing defect data across five product lines. Which measure of central tendency is most appropriate for highly skewed count data?

Accepted Answer

Median

Answer

Arithmetic mean

Answer

Geometric mean

Answer

Mode

Question 5

What is the primary purpose of calculating the Cp index during the Measure phase?

Accepted Answer

To assess the potential capability of a process assuming it is centered

Answer

To determine if the process mean is centered within specification limits

Answer

To measure the long-term performance of a process

Answer

To identify special cause variation in the process

Question 6

A Black Belt discovers that 78% of late deliveries come from two of eight distribution centers. Which analysis technique revealed this finding?

Accepted Answer

Stratification with Pareto analysis

Answer

Failure Mode and Effects Analysis

Answer

Multi-vari analysis

Answer

Correlation analysis