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 symptoms related to customer contact, Unit 1 Discussion Suppose you...

Unit 1 Discussion Suppose you were conducting a marketing analysis for a new textbook about technology management. What would you need to know to identify a market segment? How wou

Explain purpose of political lobbying, Cindy, an employee of Stellar Snowbo...

Cindy, an employee of Stellar Snowboard Manufacturing, has just signed an authorization card during a union organizing campaign by Local 79 of the Teamsters Union. Cindy has agreed

Explain job design be used to create a motivated workforce, How can job des...

How can job design be used to create a more motivated workforce? Be specific.

Explain how training and education of work forces are differ, Explain how t...

Explain how the training and education of work force differ from that of the middle level managers. The training and education of work force differ from that of the middle le

Demand Forecasting and Inventory Management., Discuss the supply management...

Discuss the supply management''s heightened concern for future acquisition needs - for example, capital equipment acquisition, supplies contract, standard commodity, etc.

Explain what is the optimal solution, Kentwood Electronics manufactures thr...

Kentwood Electronics manufactures three components for stereo systems: CD players, tape decks, and stereo tuners. The wholesale price and manufacturing cost of each item are: Compo

Explain bp''s first problem, Describe BP'S first problem, which involved th...

Describe BP'S first problem, which involved the firms IT function. Discuss BP'S solution to this problem.

How business affected the make-or-buy decision, How has the increase in unc...

How has the increase in uncertainty in business affected the "make-or-buy" decision, and is this trend likely to change?

Explain the lead time for paper delivery, First printing has contracts with...

First printing has contracts with legal firms in San Francisco to copy their court documents. Daily demand is almost constant at 12,500 pages of documents. The lead time for paper

Explain the overall strategy, Put yourself in the position of an entreprene...

Put yourself in the position of an entrepreneur who is developing a new product to introduce into the market. Briefly describe the product. Then develop the segmentation, targeting

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