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

Financial executives helped by hr department, How might an HR department he...

How might an HR department help to develop financial executives who are ethical leaders and mentors?

Explain why is it impirtant for pay to be externally fair, 1. Why is it imp...

1. Why is it impirtant for pay to be externally fair? 2. Why is it important for pay to be internally fair? 3. What should Costa Vida's compensation strategy look like?

Define what unions unionization does southwest airlines have, What unions /...

What unions / unionization does Southwest Airlines have?

Contents of an operations strategy , Contents of an Operations Strategy  ...

Contents of an Operations Strategy  The contents of an operations strategy is the policies, plans, performance targets which the organisation wishes to achieve. To determine

Statistical process control - mean and range charts, Statistical Process Co...

Statistical Process Control - Mean and Range Charts 1. SPC can be used as a means of preventing product non-conformance  2. Causes of variability may be categorised as comm

Describe what the customer''s expectations, Explain what the customer's exp...

Explain what the customer's expectations are concerning the salesperson's attitude toward competition

Describe what are best buy strategic objectives, What are strategic objecti...

What are strategic objectives? What is the purpose of strategic objectives? What makes an effective strategic objective? What are examples of strategic objectives for you organizat

Innovative ideas for management position, These are questions I were asked,...

These are questions I were asked, i'm assuming you could understand the question based on the way I worded the answers. It's suppose to be a paragraph but i'm not exactly sure what

Explain field of construction management, Discuss how the transformation pr...

Discuss how the transformation process applies to the field of construction management

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