Attributes - statistical process control, Operation Management

Assignment Help:

Attributes - Statistical Process Control

On the other hand, some processes have outputs with attributes to be controlled where counting the number of defects is more appropriate than measuring them. The outputs can be segregated into two categories (eg pass/fail or non-defective/defective). For example, in bottle production, the design requirement may stipulate a maximum allowable number of air bubbles in the glass. Bottles which have no more than this number of bubbles would be counted as non-defective items; bottles with more than this number would be counted as defective items. Returning to the example of controlling the diameters of discs, it might be decided, perhaps for reasons of economy, that it is more appropriate to gauge the diameters rather than measure them. This figure shows how this can be achieved by use of a simple go/not-go gap gauge. Conforming discs, as shown in this figure, will be small enough to enter the 'go' gap, but too large to enter the 'not go' gap. As a result the output will be segregated into countable 'pass' and 'reject' groups.

1070_Attributes - Statistical Process Control.png

Much of what follows concerns the construction and use of statistical process control charts for both categories of output. The main treatment focuses on two complementary charts, sample mean and sample range charts, for the control of variables. This is followed by accounts of three charts for the control of attributes: proportion defective, number defective and number of defects.


Related Discussions:- Attributes - statistical process control

Explain two operations-related tasks carried out by firm, Identify two oper...

Identify two operations-related tasks carried out by Hard Rock Café

Explain authority to make such an agreement, White, Fring, and Pinkman are ...

White, Fring, and Pinkman are partners in the operation of the A1A car wash. Without Fring's knowledge, White and Pinkman sold 10 percent of their interest in the business and its

Explain extensive evaluation of personal records revealed, President of Was...

President of Washington Enterprise and controlled 16 plants throughout the South. Extensive evaluation of personal records revealed the name Sid Smith, assistant plant manager in A

Explain how long is each production cycle, Your company manufactures turbin...

Your company manufactures turbine blades for engines in production batches for each type. For one type of blade, the A39T, you have an annual demand of 10,000 units. It costs you $

Dont know, Q. A textile manufacturer is interested in optimally determined...

Q. A textile manufacturer is interested in optimally determined inventories for cutting operations for a children’s product line. The production manager would like to establish th

How library to research and analyze markets and competitors, E-commerce is ...

E-commerce is the trend that most companies are going toward now a days. You are to select one business that does not already employ e-commerce and develop an Internet strategy for

Capasities in both manufacturing and service sector operatio, define the te...

define the term "operation management" and expailn the importants of operation management theories in both manufacturing and services

Rapid innovation - customers needs for a product, Rapid innovation - Custom...

Rapid innovation - Customers Needs for a Product The readiness with which the operations system can generate new products and services, and get them to market quickly. A study

Different approaches to innovation discussed organizations, Analyze the dif...

Analyze the different approaches to innovation discussed in this chapter to determine which approach you think would be the greatest value to the greatest number of organizations.

Ambience of the physical surroundings - facility layout, Ambience of the Ph...

Ambience of the Physical Surroundings - Facility Layout Décor, noise levels, music, temperature and lighting may affect the customers' judgement of the service, how long they

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