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

What are disadvantages of holding inventory control system, What are the di...

What are the disadvantages of holding inventory control systems? Disadvantages of holding inventory control systems: a. Higher risk of damage, theft and deterioration b.

Carl thor - performance measures, Carl Thor - Performance Measures Car...

Carl Thor - Performance Measures Carl Thor (1994) highlights the 'family of measures' concept and the alignment of measures across a company. He describes five measurement cat

Development of bar chart, Development of Bar Chart The following are ...

Development of Bar Chart The following are significant stages in developing a bar chart: 1)Breakdown: The project into its various activities or jobs or operations each

Product focused production system, Product Focused Production System ...

Product Focused Production System In this type of production processing, the production departments are organized according to the type of product / service being produced, a

Describe you can conduct outside research to locate info, In a 1-2 page pap...

In a 1-2 page paper discuss the following case study by applying the knowledge you gained through this week's studies. If necessary, you can conduct outside research to locate info

Explain improve long-term sales potential, Corporate social responsibility ...

Corporate social responsibility programs that increase brand awareness to improve brand equity, in order to improve long-term sales potential, are directly affecting the ______ out

Describe what you understand by supply chain management, Question : (a)...

Question : (a) Describe what you understand by supply chain management. (b) An important decision facing most purchasing managers is whether to source each individual produc

Explain what is your total cost for balls each year, You buy tow hitch ball...

You buy tow hitch balls in large lots for the tow tractors you manufacture. You estimate that it costs you approximately 20% of cost to store a ball for a year. Ordering cost is

Illustrate your discussion using a service organisation, Question 1: "Y...

Question 1: "Yield management guides the decision of how to allocate undifferentiated units of capacity to available demand in such a way as to maximize profit or revenue." Cri

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