Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt The Measure Phase 1

Question 1

Which of the following is an example of continuous data collected during the Measure phase?

Accepted Answer

Cycle time measured in seconds for each transaction

Answer

Continuous data can take any measurable value within a range (e.g., time, temperature, weight). Cycle time in seconds is measured on a continuous scale. The other options represent discrete (counted) data, which can only take whole-number values.

Question 2

What does a Cpk value of less than 1.0 indicate about a process?

Accepted Answer

The process is not capable and is producing output outside specification limits

Answer

Cpk measures how well a process fits within its specification limits while accounting for centering. A Cpk below 1.0 means the process spread extends beyond at least one specification limit, resulting in defective output. A Cpk of 1.33 or higher is the common minimum threshold for a capable process.

Question 3

Why are operational definitions essential to establish before collecting data in the Measure phase?

Accepted Answer

They ensure everyone measures the same thing in the same way, producing consistent data

Answer

Operational definitions provide a precise, unambiguous description of what is being measured and exactly how to measure it. Without them, different collectors may interpret and record data differently, making the dataset unreliable and comparisons meaningless.

Question 4

What is the main purpose of establishing a process baseline during the Measure phase?

Accepted Answer

To document current process performance so improvements can be quantified later

Answer

A baseline captures the current level of process performance—such as defect rate, cycle time, or sigma level—before any changes are made. It serves as a benchmark so the team can objectively measure how much improvement the Improve phase actually delivered.

Question 5

In a Gage Repeatability and Reproducibility (Gage R&R) study, what does 'reproducibility' specifically measure?

Accepted Answer

The variation that occurs when different operators measure the same part with the same gage

Answer

Reproducibility captures operator-to-operator variation—how much results differ when multiple people use the same instrument on the same part. Repeatability, by contrast, captures within-operator variation (one person, same part, multiple trials). Both components together reveal whether the measurement system is trustworthy.

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt The Measure Phase 1