Mountainview ITSM


ITIL  20000  27000  more


eLearning  Virtual  Classroom  Exams


License  Corporate


Contacts  Downloads  Reviews  Search

ITIL 4 Foundation Sale

ITIL V3 Foundation Sale

ITIL V3 Intermediate Sale

ITIL V3 Expert Sale

India Prices

Plan-Do-Check-Act (PDCA) Primer

PDCA ("Plan-Do-Check-Act") is an iterative four-step problem-solving process typically used in business process improvement. It is also known as the Deming Cycle, Shewhart cycle, Deming Wheel, or Plan-Do-Study-Act.


  • Establish the objectives and processes necessary to deliver results in accordance with the expected output
  • Make the expected output the focus
  • Align Plans to business outcomes
  • Design processes with Business Effectiveness, Efficiency and Economy in mind


  • Implement the new processes
  • Manage the new processes to ensure that they are working according to the Plan
  • Note: The Plan may be faulty!


  • Measure the new processes
  • Compare the results against the expected results with industry or corporate norms
  • Determine any differences
  • Analyze the differences using statistical methods
  • Identify potential Problems


  • Identify the Problem
  • Establish the probable Root Cause(s) to the Problem
  • Investigate and Diagnose the Root Cause
  • Determine the Solution(s) for the Root Cause
  • Evaluate the "best" feasible Solution to resolve the Problem

The concept of PDCA comes out of the Scientific Method, as developed from the work of Francis Bacon.

Shewhart described manufacturing under "control" - under statistical control - as a three step process of specification, production, and inspection. Shewhart says that the statistician "must help to change the demand [for goods] by to close up the tolerance range and to improve the quality of goods."

Deming shortened the steps to the now traditional Plan, Do, Check, Act. Deming preferred Plan, Do, Study, Act because 'Study' has connotations in English closer to Shewhart's intent than "Check."

World-wide Accedited ITIL Training and Courseware


Contact us  Primers   Accreditation  About us   Consult & Audit  Partners   Alumni   Trainers  Careers

AXELOS Partner

TwitterGoogle +1StumbleuponFacebook LikeLinkedinPinterest

   Mountainview ITSM 1992-2018

Trademarks and Terms & Conditions of Use

No part of this website may be reproduced in any form without the written permission of both Mountainview and AXELOS Limited. Permission can be requested at and