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 employees accepting responsibility, The workplace is moving from ca...

The workplace is moving from career ladders to career tracks, with employees accepting responsibility for managing their own careers. Elaborate on this new phenomenon, discussing s

Explain what is the consumer research, What is the consumer research behind...

What is the consumer research behind the growth of Toyota and the brand strategy they have in place? Discuss the brand strength behind Toyota. It is recommended to include the cons

Employees that meet to recognize work problems, Small groups of employees t...

Small groups of employees that meet to recognize work problems and their solution are known as   Quality circles.

Explain production and distribution of pharmaceutical, Carrington inc is an...

Carrington inc is an international company engaged in the production and distribution of pharmaceutical. Is the Peterson operation successful? To the degree that it can be judged a

Explain secondary data are the, Secondary data are the facts and figures...

Secondary data are the facts and figures that are newly collected for the project at hand. facts and figures obtained by watching people mechanically rather than in person.

Linear programming, Solve the following Linear Programming Problem using Si...

Solve the following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

Explain technical proficiency has never been enough, Evaluate the following...

Evaluate the following statement: Technical proficiency has never been enough for professionals to grow beyond the staff level. Do you agree or disagree, and why? In your own words

Explain what are the capacity requirements, Always Rain Irrigation, Inc., w...

Always Rain Irrigation, Inc., would like to determine capacity requirements for the next four years. Currently two production lines are I place for making bronze and plastic sprink

Explain the probable destiny of lee peterson''s company, Consider this: Lee...

Consider this: Lee Peterson has invented a new product that detects water leaks due to broken pipes and sends out an alarm similar to a smoke alarm. However, Lee has very little pe

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