Lean Six Sigma Yellow Belt The Improve Phase Questions and Answers

Question 1

Which of the following best describes the transition from the Analyze phase to the Improve phase in a DMAIC project?

Accepted Answer

From having a validated root cause to brainstorming and selecting a fix for that cause.

Answer

From gathering baseline performance data to identifying potential root causes.

Answer

From implementing a solution to creating a long-term monitoring plan.

Answer

From defining the project's goals to mapping the current state process.

Question 2

A project team has generated several potential solutions to reduce errors in order processing. To prioritize which solutions to pursue, they create a grid to evaluate each idea based on its potential benefits and the resources required for implementation. What is this tool called?

Accepted Answer

Impact/Effort Matrix

Answer

Fishbone Diagram

Answer

Control Chart

Answer

Pareto Chart

Question 3

What is the primary purpose of conducting a pilot test during the Improve phase?

Accepted Answer

To test the proposed solution on a small scale to validate its effectiveness and uncover potential issues.

Answer

To gather baseline data on the original process.

Answer

To identify all possible root causes of the initial problem.

Answer

To create the initial project charter and define the scope.

Question 4

Before implementing a new software system designed to improve a process, the project team wants to proactively identify potential ways the new system could fail, the consequences of those failures, and how they could be prevented. Which tool is most suitable for this activity?

Accepted Answer

Failure Modes and Effects Analysis (FMEA)

Answer

5 Whys

Answer

Scatter Plot

Answer

Histogram

Question 5

Which of the following activities is a core component of the Improve phase?

Accepted Answer

Conducting a Plan-Do-Check-Act (PDCA) cycle to test a solution.

Answer

Calculating the process sigma level for the baseline process.

Answer

Creating a detailed map of the current state process.

Answer

Validating the measurement system with a Gage R&R study.

Question 6

What is the primary objective of the Improve phase in a DMAIC project?

Accepted Answer

To generate, evaluate, and implement solutions that address root causes. [2, 9]

Answer

To establish a baseline for current process performance.

Answer

To use statistical analysis to identify the verified root causes of a problem.

Answer

To create a control plan to ensure long-term process stability.