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 quality improvement programs, Some have argued the Six Sigma progra...

Some have argued the Six Sigma programs are merely repackaged versions of older quality improvement programs that originally accompanied TQM initiatives in the 1980s. Present argum

Process design, what is process design in operation management

what is process design in operation management

What are pros as well as cons of updating the product design, Since its rel...

Since its release in 2001, the iPod has become a music player phenomenon. In your opinion, how would the QFD approach have helped Apple in developing the iPod? What are the limi

Explain ethical problems and increase of competitive, Can someone give me s...

Can someone give me some ideas of how to implement a turnaround strategy for a United Way due to the fact that they have some ethical problems and increase of competitive.

Explain good corporate citizen and moral agent, • Do corporations have a re...

• Do corporations have a responsibility to be a good corporate citizen and moral agent? What do these terms mean to you? Justify your opinion by providing examples. • If you wer

, What happens if balance doesn’t exis

What happens if balance doesn’t exist

Automation trends in operations management, how automation helps in trends ...

how automation helps in trends of operations management

Explain should health care workers receive the flu vaccine, Should health c...

Should health care workers receive the flu vaccine? I f not why not?

Define what is divine command theory, What is Divine Command theory? Given ...

What is Divine Command theory? Given the power gap between God and humanity how do we make the moral demands work? How do we make Divine command theory work?

Explain what is the revised forecast for the second quarter, Q. 4. A two ye...

Q. 4. A two year sales history by quarter for a seasonal product is given below. Sales Quarter First Year Second Year 1 30 42 2 48 58 3 60 74 4 35 44 a) Using

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