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

How to construct an electricity generating unit, To construct an electricit...

To construct an electricity generating unit, a company has to install 60 items. One team takes on an average 30 days to install one item. A team works for 300 days/year and managem

Find forecasted sales for week first, In the table given below the Distribu...

In the table given below the Distribution Manager is expected to service these DCs as per the demands placed. If the actual sales after completing week one is as follows, what woul

Explain risks to a broad generic business strategy, What are some drawbacks...

What are some drawbacks and risks to a broad generic business strategy? To a focused strategy?

Explain relationship between the company''s values, What is the relationshi...

What is the relationship between the company's values and strategy? Provide real world examples. Additional research is necessary by using scholarly publications. Cite accordingly

Explain what is the cheapest cost for meeting, ABC Machine Shop, Inc., has ...

ABC Machine Shop, Inc., has a 1-year contract for the production of 48,000 gear housings for a new off-road vehicle. ABC hopes that the contract will be extended and the production

The owners it person has alerted him to several problems, The graphic desig...

The graphic design shop where you work as the Account Manager is doing well. Just last year, the owner hired three new designers and a receptionist, bringing the total number of em

., The following process is designed to handle 120 customers a day. The cus...

The following process is designed to handle 120 customers a day. The customer is “processed” through each of the two operations, A and B, in sequence form. The average rate of each

Explain project management is a strategic necessity, Project Management is ...

Project Management is a strategic necessity for the success of any business. Based on the reading in the chapters what do you think are the 5 most critical points in delivering suc

Describe fully and provide citations, On February 1, Mary verbally agrees t...

On February 1, Mary verbally agrees to work as a businessperson on a temporary basis for the firm of Blacke & Blewe, P.C. The job that Mary is assigned to do will take eight months

Explain responsibility of improving automobile loans, A loan manager for Ba...

A loan manager for Bank of Cascades has the responsibility of improving automobile loans. To assist her in this matter, she has compiled data on 428 cars and trucks. This data are

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