Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt Measure Phase and Statistics Questions and Answers 2

Question 1

What is the primary purpose of a measurement system analysis (MSA) in the Measure phase?

Accepted Answer

To evaluate the accuracy and precision of the measurement system

Answer

To identify root causes of defects

Answer

To implement process improvements

Answer

To validate customer requirements

Question 2

A process has a mean of 50 and a standard deviation of 5. What percentage of data falls within one standard deviation of the mean in a normal distribution?

Accepted Answer

68.26%

Answer

95.44%

Answer

99.73%

Answer

50%

Question 3

Which type of data would 'number of customer complaints per month' be classified as?

Accepted Answer

Discrete data

Answer

Continuous data

Answer

Attribute data

Answer

Nominal data

Question 4

What does a Gage R&R study specifically measure?

Accepted Answer

Repeatability and reproducibility of a measurement system

Answer

Range and reliability of a process

Answer

Risk and reward of a project

Answer

Rate and ratio of defects

Question 5

If a dataset has a positively skewed distribution, which relationship between the measures of central tendency is correct?

Accepted Answer

Mean > Median > Mode

Answer

Mode > Median > Mean

Answer

Mean = Median = Mode

Answer

Median > Mean > Mode

Question 6

What is the correct formula for calculating the coefficient of variation (CV)?

Accepted Answer

(Standard deviation / Mean) × 100

Answer

(Mean / Standard deviation) × 100

Answer

(Range / Mean) × 100

Answer

(Variance / Mean) × 100