# Lean Six Sigma Tutorial Video | Lean Six Sigma Training – Improve Phase

Introduction to Improve Phase
The fifth lesson of the Lean Six Sigma Green Belt Course offered by Simplilearn. This lesson will focus on the improve phase of the DMAIC process.
In the analyze phase, the data was analyzed and some patterns were found to identify where the problem lies. In this lesson, we will review the Improve phase to understand how to go about the improvements, their validation, etc.
After completing this lesson, you will be able to:
Describe the concepts of Design of Experiments (DOE)
Explain the uses of Residuals Analysis and Box and Cox Transformation technique.
Discuss the cause and effect matrix and the 5 why tool in root cause analysis
Explain the Lean and Kaizen techniques.
Design of Experiments: An Introduction
Design of experiments or DOE consists of a series of planned and scientific experiments that test various input variables and their eventual impact on the output variable.
Design of Experiments can be used as a one-stop alternative for analyzing all influencing factors to arrive at a successful model. DOE is applicable where multiple input variables known as Factors affect a single Response Variable. An Output variable is the variable which may get affected due to multiple input variables.
DOE is preferred over One Factor at a Time or OFAT experiments because it does not miss interactions.
The use of techniques like Blocking can eliminate experimental error. The trials should be randomized to avoid concluding that a factor is significant when the time at which it is measured or the sequence followed may have influenced the response’s result. With techniques like Replication, many experiments can be conducted to ensure a robust model.
So the watch the entire to know more about the following topics.
DOE – A Plastic Molding Example, Components of DOE in the Moulding Example, Full Factorial Experiment – An Example, Design of Experiments — Runs, Root cause analysis, Residuals Analysis, Data Transformation using Box Cox, Process Input and Output Variables, Cause and Effect Matrix — Steps to Upd, Cause and Effect Diagram, Cause and Effect Diagram – Example, The 5 Why Technique, The 5 Why Process, 5 Why — Example, Topic splash screen, Lean Techniques, Cycle Time Reduction, Cycle Time Reduction-Example, Kaizen and Kaizen Blitz—Introduction, Kaizen and Kaizen Blitz—Differences, Kaizen and Kaizen Blitz—Examples.

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