Understanding Common vs. Special Causes in SPC PPT

This PPT slide, part of the 138-slide Six Sigma - Statistical Process Control (SPC) PowerPoint presentation, presents a visual representation of Statistical Process Control (SPC) focusing on the distinction between common and special causes of variation in processes. It illustrates 2 scenarios: one where common causes dominate and another where special causes are prevalent.

In the first scenario, the output of a process characterized by common causes forms a stable and predictable distribution over time, depicted by green curves. This stability suggests that the process is operating within its normal range, allowing for reliable predictions about future performance. The accompanying graph indicates a consistent trend, reinforcing the notion of predictability in outcomes.

Conversely, the second scenario highlights the impact of special causes of variation, represented by red curves. Here, the output lacks stability and predictability, indicating that external factors or anomalies are influencing the process. The graph shows erratic behavior, suggesting that the process may be subject to unexpected changes, making it difficult to forecast future results accurately.

The question mark in the prediction line for the special causes scenario emphasizes uncertainty, signaling that without addressing these special causes, the process cannot be effectively controlled. This distinction is crucial for organizations aiming to improve operational efficiency. Understanding whether variations stem from common or special causes can guide decision-making and process improvement initiatives.

This slide serves as a foundational piece for those looking to grasp SPC principles, offering insights into how variations affect process stability and predictability. It underscores the importance of identifying the root causes of variation to enhance process management and drive better outcomes.

This slide is part of the Six Sigma - Statistical Process Control (SPC) PowerPoint presentation.

Developed by a Senior Executive and Operational Excellence Coach with experience at organizations including NOKIA, MICROVENTION, and MAGELLAN, this presentation provides a detailed Introduction to Statistical Process Control (SPC) Charts.

Download the Full Presentation

EXPLORE MORE SLIDES FROM THIS PRESENTATION

EXPLORE MORE PRESENTATIONS ON

Six Sigma Project Statistical Process Control Process Improvement Six Sigma

Are you familiar with Flevy? We are you shortcut to immediate value.

Flevy provides business best practices—the same as those produced by top-tier consulting firms and used by Fortune 100 companies. Our best practice business frameworks, financial models, and templates are of the same caliber as those produced by top-tier management consulting firms, like McKinsey, BCG, Bain, Deloitte, and Accenture. Most were developed by seasoned executives and consultants with 20+ years of experience.

Trusted by over 10,000+ Client Organizations

Since 2012, we have provided best practices to over 10,000 businesses and organizations of all sizes, from startups and small businesses to the Fortune 100, in over 130 countries.

Flevy is the world's largest knowledge base of best practices.

Leverage the Experience of Experts.

Find documents of the same caliber as those used by top-tier consulting firms, like McKinsey, BCG, Bain, Deloitte, Accenture.

Download Immediately and Use.

Our PowerPoint presentations, Excel workbooks, and Word documents are completely customizable, including rebrandable.

Save Time, Effort, and Money.

Save yourself and your employees countless hours. Use that time to work on more value-added and fulfilling activities.

Read Customer Testimonials

"I have found Flevy to be an amazing resource and library of useful presentations for lean sigma, change management and so many other topics. This has reduced the time I need to spend on preparing for my performance consultation. The library is easily accessible and updates are regularly provided. A wealth of great information."

– Cynthia Howard RN, PhD, Executive Coach at Ei Leadership

"As an Independent Management Consultant, I find Flevy to add great value as a source of best practices, templates and information on new trends. Flevy has matured and the quality and quantity of the library is excellent. Lastly the price charged is reasonable, creating a win-win value for

... [read more]

– Jim Schoen, Principal at FRC Group

"I have used Flevy services for a number of years and have never, ever been disappointed. As a matter of fact, David and his team continue, time after time, to impress me with their willingness to assist and in the real sense of the word. I have concluded in fact

... [read more]

– Roberto Pelliccia, Senior Executive in International Hospitality

"Last Sunday morning, I was diligently working on an important presentation for a client and found myself in need of additional content and suitable templates for various types of graphics. Flevy.com proved to be a treasure trove for both content and design at a reasonable price, considering the time I

... [read more]

– M. E., Chief Commercial Officer, International Logistics Service Provider

"[Flevy] produces some great work that has been/continues to be of immense help not only to myself, but as I seek to provide professional services to my clients, it gives me a large "tool box" of resources that are critical to provide them with the quality of service and outcomes they are expecting."

– Royston Knowles, Executive with 50+ Years of Board Level Experience

"Flevy.com has proven to be an invaluable resource library to our Independent Management Consultancy, supporting and enabling us to better serve our enterprise clients.

The value derived from our [FlevyPro] subscription in terms of the business it has helped to gain far exceeds the investment made, making a subscription a no-brainer for any growing consultancy – or in-house strategy team."

– Dean Carlton, Chief Transformation Officer, Global Village Transformations Pty Ltd.

"As a small business owner, the resource material available from FlevyPro has proven to be invaluable. The ability to search for material on demand based our project events and client requirements was great for me and proved very beneficial to my clients. Importantly, being able to easily edit and tailor

... [read more]

– Michael Duff, Managing Director at Change Strategy (UK)

"As a consulting firm, we had been creating subject matter training materials for our people and found the excellent materials on Flevy, which saved us 100's of hours of re-creating what already exists on the Flevy materials we purchased."

– Michael Evans, Managing Director at Newport LLC