Lean Six Sigma Yellow Belt Certification The Measure Phase 2

Question 1

Which type of data is collected when you record whether a product passes or fails inspection?

Accepted Answer

Attribute data

Answer

Attribute data (also called discrete data) classifies items into categories such as pass/fail or defective/non-defective.

Question 2

A control chart shows a process with all points within control limits but 9 consecutive points on the same side of the centerline. This indicates:

Accepted Answer

A special cause of variation is present

Answer

Nine or more consecutive points on one side of the centerline is a Western Electric rule violation indicating a special cause of variation.

Question 3

What does the 'sigma level' of a process primarily indicate?

Accepted Answer

How many defects occur per million opportunities

Answer

Sigma level indicates process capability expressed as defects per million opportunities (DPMO), with higher sigma meaning fewer defects.

Question 4

In a Gauge R&R study, 'reproducibility' refers to variation caused by:

Accepted Answer

Different operators measuring the same part

Answer

Reproducibility measures the variation in average measurements made by different operators using the same gauge on the same part.

Question 5

Which sampling method divides the population into subgroups and randomly samples from each subgroup?

Accepted Answer

Stratified sampling

Answer

Stratified sampling divides the population into homogeneous subgroups (strata) and takes random samples from each stratum.

Lean Six Sigma Yellow Belt Certification Practice Test