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 relationships between perceptions and attitudes, What are the relat...

What are the relationships between perceptions, attitudes, behaviours, and job performance

Describe wholesale pricing, What provision of the Telecommunications Act of...

What provision of the Telecommunications Act of 1996 prohibits ILECs from requiring customers to dial an extra digit when calling someone who subscribes to a competitor's local pho

Explain technology-intensive method of production, A production method that...

A production method that relies on large quantities of machines and equipment and smaller quantities of labor is referred to as a 1. variable-input-intensive method of productio

Explain service quality addresses, 1. Can some please help me with these f...

1. Can some please help me with these fill in's? I am not sure I have the right answers One Way to identidy goals is to identify best practices through a process known as________

Describe how the eoq technique helps, Explain how the EOQ technique helps e...

Explain how the EOQ technique helps explain the following: All things being equal, the production inventory quantity will be larger than the economic order quantity.

Explain description of the crime, Find a news article with homicide Provide...

Find a news article with homicide Provide a brief description of the crime. What does the crime data suggest about this type of crime? Does the article discuss the motive for the c

Describe is it important to stress quality in a logistic sys, Is it importa...

Is it important to stress quality in a logistic system?

Explain purchase the motors for the appliance, A firm plans to begin produc...

A firm plans to begin production of a new small appliance. The manager must decide whether to purchase the motors for the appliance from a vendor for $7 each or to produce them in-

What is decomposition principle, Solve the following linear program using t...

Solve the following linear program using the decomposition principle: minimize z = ?2x1 ? 5x2 subject to x1 + 2x2 = 13.5 x1 + 3x2 = 18.0 x1 ? 9 x2 ? 5 x1, x2 ? 0. Let the first two

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