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 select one and critique its content, Conduct a search of websites t...

Conduct a search of websites that provide Internet presentations. Select one and critique its content, visuals, and the presenter's skills. Make sure to include the URL in your Dis

Explain different external or internal events, Provide 4 examples of differ...

Provide 4 examples of different external or internal events that may trigger an organization to reorganize (i.e., decrease in hospital volume).

Explain fundamental purpose of supply chain design, 1. The purpose of suppl...

1. The purpose of supply chain management is to synchronize a firms processes with those of its suppliers and customers. 2. Supply chain management tries to match the flow of ma

Explain what benefit would using the optimal order quantity, Garden Variety...

Garden Variety Flower Shop uses 760 clay pots a month. The pots are purchased at $2 each. Annual carrying costs per pot are estimated to be 30 percent of cost, and ordering costs a

Explain michael porter''s competitive forces model, Discuss Michael Porter'...

Discuss Michael Porter's Competitive Forces Model. Provide examples to illustrate your points.

Find annual sales is thousands of bottles, Problem 3-5 A cosmetics manufact...

Problem 3-5 A cosmetics manufacturer's marketing department has developed a linear trend equation that can be used to predict annual sales of its popular Hand & Foot Cream. Ft = 80

Explain what''s the difference between these abbreviations, In e-mails writ...

In e-mails writers sometimes use abbreviations such as FYI(for your information), ASAP(as soon as possible). Others writers sometimes use LOL (laughing out loud), 4 u(for you), gr9

Define compare the effectiveness, Compare the effectiveness of 2 week, 4wee...

Compare the effectiveness of 2 week, 4week 6week. I just need the moving averages. For 2,4 and 6 weeks from managing operations across the supply chain book the question is startin

Explain tangible and intangible strategies, There are tangible and intangib...

There are tangible and intangible strategies that organizations can evaluate their system effectiveness on. Based on Tangible value, Revenue increase, Cost decrease---labour, mater

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