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

Explain environmentally safe goods and why, Imagine you are a new product t...

Imagine you are a new product that sells for $1.25 an is environmentally safe. Would you spend thousands of dollars for Green Seal on your impulse product if ambivalent toward such

Explain women in top leadership positions, How can the inclusion of women i...

How can the inclusion of women in top leadership positions in local and national unions be increased?

Explain actionable claim for discrimination under ada, 1. If Rosa hires Cal...

1. If Rosa hires Caleb and after working for two months, Caleb requests additional time off to take care of his ailing wife and Rosa denies his request: A. Caleb has an actionab

Explain a formal or informal mutual agreement, Explain a formal or informal...

Explain a formal or informal mutual agreement. - The mutual agreement may be as given below: (a) Union security. (b) Bonus, wages and other benefits. (c) Terms and con

Define what is the evpi, The following is a payoff table giving profits for...

The following is a payoff table giving profits for various situations. States of Nature Alternatives A B C Alternative 1 100 120 180 Alternative 2 120 140 120 Alternative 3 200 100

Explain characteristics of organisational development, Explain characterist...

Explain characteristics of organisational development. Characteristics of Organisational Development (i) Organisational progress is an educational strategy for bringing a

Explain scheduled preventive maintenance, Christopher's Cranks uses a machi...

Christopher's Cranks uses a machine that is designed to produce 100 cranks per hour. The firm operates eight hours per day, five days per week. Due to operating constraints (regu

Explain social responsibility, Regarding Social Responsibility, who do you ...

Regarding Social Responsibility, who do you agree with more, Leonard (2013) or Friedman (1970)? Why?

Develop your major negotiation temperaments, Today, you have a meeting with...

Today, you have a meeting with one of the Humanitarian workers (Latisha Jones) concerning raising awareness for drunk driving in your local community. This is the fifth time that y

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