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 is operations management, Q: What is operations management?  A: Ope...

Q: What is operations management?  A: Operations management is the planning, organising and control of systems which produce goods and services. It is one of the most important

Explain insufficient to handle the increased workload, A company that produ...

A company that produces pleasure boats has decided to expand one of its lines. Current facilities are insufficient to handle the increased workload, so the company is considering t

Class work, define the following key terms in product layout: a) Product in...

define the following key terms in product layout: a) Product interval time b) Product duration (throughput time) c) Assembly line balancing

Explain managers tend to make teams too large, With regard to the question ...

With regard to the question of team size (i.e., how big the team should be), all of the following are true, except: a. Most of the time, teams should be fewer than 10 members b. Ma

Describe american business management, Why has there been (and is still) su...

Why has there been (and is still) such strong opposition to the trade union movement by American business management?

Explain what design capacity would be needed, In a job shop, effective capa...

In a job shop, effective capacity is only 50% of design capacity, and actual output is 80% of effective output. What design capacity would be needed to achieve an actual output of

Explain what does the supervisor need to be most careful, What does the sup...

What does the supervisor need to be most careful of in following up on delegation? Why?

Explain production and shipping costs, Blue Computers, a major PC manufactu...

Blue Computers, a major PC manufacturer in the United States, currently has plants in Kentucky and Pennsylvania. The Kentucky plant has a capacity of 1 million units a year and the

Define trade unions act 1926, Define Trade Unions Act 1926. Trade Union...

Define Trade Unions Act 1926. Trade Unions Act 1926 provides that any seven workers may form a union.

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