Number of defects - control chart, Operation Management

Assignment Help:

Number of Defects - Control Chart

Sometimes the attribute of concern is the number of defects (c) in an item rather than the number of defective items in a sample: for example, the number of flaws per square metre of cloth. In this situation the concept of counting non-defects, for comparison with the number of defects found, is meaningless. Such a process typically conforms to the Poisson distribution, of mean value ¯c and standard deviation √ (¯c) and the control limits are determined as:

Warning limits = ¯c ± 1.96 √ (¯c)  

Action limits = ¯c ± 3.09 √ (¯c)


Related Discussions:- Number of defects - control chart

Explain work breakdown structure, Develop a Work Breakdown Structure (WBS) ...

Develop a Work Breakdown Structure (WBS) for a project in which you are going to build a bicycle and identify two major components with three levels of details for each component

Describe perfecting project management, Read the required article "Perfecti...

Read the required article "Perfecting Project Management" by Drew Robb. List three ways a project manager could use the data described in the article to keep the project on track a

Explain the role of managers in quality and patient safety, What is the rol...

What is the role of managers in quality and patient safety?

Describe what is xyzs stock price today, Assume XYZ stocks last dividend wa...

Assume XYZ stocks last dividend was $3. The dividend growth rate is expected to be constant at 5% for 3 years, after which dividends are expected to grow at a rate of 6% forever. X

Define productivity percentage change for each category, 1 Eric Johnson mak...

1 Eric Johnson makes billiard balls in his New England plant. With recent increases in his costs, he has a newfound interest in efficiency. Eric is interested in determining the pr

Process technology life cycle , Process Technology Life Cycle Process ...

Process Technology Life Cycle Process technologies have life cycles related to product life cycles as shown in figure below. Over time unit manufacturing costs diminish for ma

Explain how can mexico production help us, How can Mexico production help U...

How can Mexico production help US manufacturers bring back some/most? of their Asia offshoring activities?

Explain firms taking different business strategies, The value chain priorit...

The value chain priorities can be quite different for firms taking different business strategies. Create examples of value chains for three firms: one using cost leadership, anothe

Explain risks associated with the globalization, Are there any risks associ...

Are there any risks associated with the globalization of health care? Can these risks be mitigated? How

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd