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

After working for 30 years, In the table given below the Distribution Manag...

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

Impact of multinational enterprises to their firm boundaries, Multinational...

Multinational enterprises (MNEs) have an impact far beyond their firm boundaries. Assume you are working for a small firm that supplies a product or service to an MNE. How might yo

Political risk for an organisation, Identify, with examples, groups that ma...

Identify, with examples, groups that may represent a significant political risk for an organisation that is considering engaging in Foreign Direct Investment.  When companies a

Technology which encourages user contributions, Technology which encourages...

Technology which encourages user contributions and interactivity is known as Web 2.0.

Identify business strategy and manufacturing strategy. , Your company has ...

Your company has been invited to look at possible improvements to the manufacturing system at Fly Fishing Reels.  Your colleague has already visited the company to collect the atta

Explain low customer contact and are capital intensive, What are companies ...

What are companies that have low customer contact and are capital intensive; yet provide a service, called?

Explain what is the present value of the following annuities, What is the p...

What is the present value of the following annuities? a. $2,500 a year for 10 years discounted back to the present at 7% b. $70 a year for 3 years discounted back to the pres

Explain what are the major problem issues facing sandy, After reading the C...

After reading the Concluding Case entitled "Barbara's World of Windows, Fabrics, and Accessories", what are the major problem issues facing Sandy, and what specific recommendations

Explain increasing the level of confidence, All other things held constant,...

All other things held constant, increasing the level of confidence for a confidence interval estimate for the difference between two population means will result in a wider confide

Explain lifestyle entrepreneur, Define the following in your own words, do ...

Define the following in your own words, do not copy and paste, won't give points for that Lifestyle Entrepreneur Serial Entrepreneur Classic Entrepreneur

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