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

Travel charts and string diagrams, Travel Charts and String Diagrams T...

Travel Charts and String Diagrams The use of travel charts has already been described under facility layout (see figure on page 140). A string diagram (see figure below) is us

Expalin the fundamental ethical principle, How does utilitarianism contradi...

How does utilitarianism contradict the fundamental ethical principle: the end does not justify the means?

Depict a project network that includes all the activities, Operations and S...

Operations and Supply Chain Management : CELL PHONE DESIGN PROJECT 1. Draw a project network that includes all the activities 2. Calculate the start and finish times for each

Describe what will be the duration of management conference, What will be t...

What will be the duration of a management conference duration?

Makw or to Buy ?, • ABC Ltd. is in the business of manufacturing one type o...

• ABC Ltd. is in the business of manufacturing one type of valves for last 3 years. • Their sales have grown from 10,000 to about 50,000 valves per month. • Now they are planning t

Define why it is vital to understand the impact of culture, Contrast the dy...

Contrast the dynamics between dominant cultures and subcultures either in a work setting or in society. Explain why it is important to understand the impact of culture

Explain first step in your data analytical project, Your final project enta...

Your final project entails systematic extraction of decision-aiding insights out of a dataset provided to you in the Doc Sharing area. This project will provide you with hands-on e

Process design, Task 1 Read: Chapter 4 of the Core learning material and su...

Task 1 Read: Chapter 4 of the Core learning material and supporting text chapters on Process Design. Task 2 Investigate: Consider the operations of your own organisation (or ano

Emba, How many stamping machines are required?

How many stamping machines are required?

Explain standard rules of overtime pay, What are the standard rules of over...

What are the standard rules of overtime pay? Provide examples of why it is not always simple to administer. Address issues such as double pay, pyramiding, compulsory overtime, and

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