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Five Principles

What is Meant by
Process Control

Understanding Variation

Actionable Data

Statistical
Problem Solving

Process Definition

A Thought About Change

Operational Definitions

Definition of
Problem Statements

Balancing Reliability

Keeping Things
in Perspective

The Need to
Measure Progress


Operational Definitions

"Without an operational definition, investigations of a problem will be costly and ineffective, almost certain to lead to endless bickering and controversy."

W. Edwards Deming


Three components of operational definitions are:

  1. Specify the Test to determine Compliance

  2. Set the Criteria for Judgment

  3. Make the Decision based on the Criteria



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