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

What order quantity will minimize the total inventory cost, Question: Y...

Question: You are the Operations Manager at Alien University and one of your responsibilities is to manage the supplies of the University. One of your suppliers has given you

Explain the concept of globalization many businesses operate, Based on the ...

Based on the concept of globalization, many businesses operate and compete in a global environment. Describe the additional factors that affect/impact global supply chains.

Define globalization of health care good or bad for patients, Is the global...

Is the globalization of health care good or bad for patients? Who might benefit from the globalization of health care? Who might lose?

Dont know, Q. A textile manufacturer is interested in optimally determined...

Q. A textile manufacturer is interested in optimally determined inventories for cutting operations for a children’s product line. The production manager would like to establish th

Define the break-even point for each range, A manager must decide how many ...

A manager must decide how many machines of a certain type to purchase. Each machine can process 100 customers per day. One machine will result in a fixed cost of $2000 per day, whi

Explain what is the efficiency, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE

Explain ways you expect to use format design, Commercial and personal Websi...

Commercial and personal Websites, as well as print media, design their formats and include visuals for optimal audience appeal. Select a Website or print medium for this reflective

Explain in your opinion are the protections necessary, Identify and discuss...

Identify and discuss each of the warranty protections that apply to the sale of goods under Article 2A of the Uniform Commercial Code (UCC). Provide an example for each that is not

Explain does an mrp system take seasonal items, Does an MRP system take sea...

Does an MRP system take seasonal items into account? If yes, how does this work?

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