Statistical Comparison of Process Standard Deviations PPT

This PPT slide, part of the 72-slide Six Sigma - Confidence Interval Analysis PowerPoint presentation, presents a comparative analysis of 2 processes, focusing on their standard deviations and the implications for process improvement. It poses a critical question: Is there evidence for a significant process improvement?

On the left side, Process 1 is detailed with a sample size (n1) of 10 and a standard deviation (s1) of 7.03. The 95% confidence interval for the true standard deviation is calculated to range from 4.84 to 12.83. This interval indicates the range within which the actual standard deviation is likely to fall, given the sample data.

Conversely, Process 2 is represented on the right side, with a larger sample size (n2) of 50 and a standard deviation (s2) of 9.84. The confidence interval for Process 2's true standard deviation is wider, ranging from 8.22 to 12.26. This suggests that while the sample is larger, the variability in the data is also greater.

The visual representation at the bottom of the slide includes a number line that likely illustrates the confidence intervals for both processes. This visual aid helps in quickly assessing the overlap and differences between the 2 intervals, which is crucial for determining if one process demonstrates a statistically significant improvement over the other.

Overall, the slide effectively communicates the statistical analysis necessary for evaluating process performance. It highlights the importance of sample size and variability in interpreting results, making it a valuable resource for decision-makers considering process enhancements.

This slide is part of the Six Sigma - Confidence Interval Analysis PowerPoint presentation.

Developed by a Senior Executive and Operational Excellence Coach with experience at organizations including NOKIA, MICROVENTION, and MAGELLAN, this presentation covers Confidence Interval Analysis using an included Excel Application.

Download the Full Presentation

EXPLORE MORE SLIDES FROM THIS PRESENTATION

EXPLORE MORE PRESENTATIONS ON

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

"One of the great discoveries that I have made for my business is the Flevy library of training materials.

As a Lean Transformation Expert, I am always making presentations to clients on a variety of topics: Training, Transformation, Total Productive Maintenance, Culture, Coaching, Tools, Leadership Behavior, etc. Flevy

... [read more]

– Ed Kemmerling, Senior Lean Transformation Expert at PMG

"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

"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

"[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

"As a consultant requiring up to date and professional material that will be of value and use to my clients, I find Flevy a very reliable resource.

The variety and quality of material available through Flevy offers a very useful and commanding source for information. Using Flevy saves me time, enhances my expertise and ends up being a good decision."

– Dennis Gershowitz, Principal at DG Associates

"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 young consulting firm, requests for input from clients vary and it's sometimes impossible to provide expert solutions across a broad spectrum of requirements. That was before I discovered Flevy.com.

Through subscription to this invaluable site of a plethora of topics that are key and crucial to consulting, I

... [read more]

– Nishi Singh, Strategist and MD at NSP Consultants

"The wide selection of frameworks is very useful to me as an independent consultant. In fact, it rivals what I had at my disposal at Big 4 Consulting firms in terms of efficacy and organization."

– Julia T., Consulting Firm Owner (Former Manager at Deloitte and Capgemini)