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

Describe what is xyzs stock price today, Assume XYZ stocks last dividend wa...

Assume XYZ stocks last dividend was $3. The dividend growth rate is expected to be constant at 5% for 3 years, after which dividends are expected to grow at a rate of 6% forever. X

Cattell''s 16pf test is normally associated, Cattell's 16PF test is normall...

Cattell's 16PF test is normally associated with Employee selection

Explain which characteristic of a project manager is more im, Discuss which...

Discuss which characteristic of a project manager is more important to high performance teams%u2014use of power or motivation?

Jhonson rule, Job Alpha Beta R 8 7 S 9 4 T 7 9 U 3 4 V 12 5

Job Alpha Beta R 8 7 S 9 4 T 7 9 U 3 4 V 12 5

Locational break - even analysis, Locational Break - even analysis In ...

Locational Break - even analysis In comparing several  potential location on  an economic  basis,( i., e, tangible factor)  the only  revenues  and costs  that need  to be con

Explain most apprenticeship programs are in skilled trades, 1. Which one of...

1. Which one of the following statements is NOT true of apprenticeships? Most apprenticeship programs are in the skilled trades. A major advantage of apprenticeships is the a

Emba, How many stamping machines are required?

How many stamping machines are required?

Explain what is change management, 1. Explain What is change management? 2...

1. Explain What is change management? 2. Explain What is the ultimate goal of change management?

Game theory is important for the understanding of what, Game theory is impo...

Game theory is important for the understanding of __________. A. competitive markets B. oligopolies C. all market structures D. monopolies

Explain competitive strategy relate to value chain structure, How does comp...

How does competitive strategy relate to value chain structure?

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