Lean Six Sigma Black Belt Certification Define and Measure Phases 5

Question 1

A team performs an attribute agreement analysis and finds that appraisers agree with each other 72% of the time but agree with the standard only 60% of the time. What should the team do first?

Accepted Answer

Investigate and standardize the appraisal criteria and training

Answer

Low agreement with the standard indicates poor accuracy; the team should clarify criteria, retrain appraisers, and rerun the study before collecting process data.

Question 2

Which metric captures the percentage of time a process produces output without any defects, rework, or scrap on the first attempt?

Accepted Answer

First Pass Yield (FPY)

Answer

First Pass Yield (FPY) measures the proportion of units that complete the process correctly the first time without any rework.

Question 3

A project team calculates Rolled Throughput Yield (RTY) for a 4-step process with individual step yields of 95%, 92%, 98%, and 90%. What is the approximate RTY?

Accepted Answer

77.0%

Answer

RTY is the product of all step yields: 0.95 × 0.92 × 0.98 × 0.90 ≈ 0.770, showing how hidden rework dramatically reduces true throughput yield.

Question 4

In a SIPOC diagram, which column directly feeds into the process steps column?

Accepted Answer

Inputs

Answer

Inputs (materials, information, resources) are what enter each process step and are supplied by the Suppliers column to the left.

Question 5

A Black Belt selects a sample size for a baseline capability study. The primary driver of minimum sample size is ensuring which of the following?

Accepted Answer

Sufficient statistical power to detect meaningful shifts

Answer

Sample size must be large enough to provide adequate statistical power to detect the difference or capability level of practical importance.

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification Define and Measure Phases 5