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

Design a operations management system, The purpose of operations management...

The purpose of operations management is to make the best use of productive resources. It entails the design and control of all the systems for the productive use of various raw mat

Explain improving productivity, Explain Improving Productivity. Improv...

Explain Improving Productivity. Improving Productivity: The production essence is creation of goods, may be by the transformation of raw materials or through assembling vario

Primary and secondary activities in value chain analysis, What are the prim...

What are the primary or secondary activities in value chain analysis? Primary or secondary activities incur costs, but within combination along with other activities give custo

Describe why it is both a business pressure, Explain why IT is both a busin...

Explain why IT is both a business pressure and an enabler of response activities that counter business pressures?

Why need to train your supervisors, Suppose you are the manager of an accou...

Suppose you are the manager of an accounts receivable unit in a large company. You are switching to a new system of billing and record-keeping and need to train your three supervis

Define decision base on an expected monetary value criterion, Page Engineer...

Page Engineering designs and constructs air conditioning and heating (HVAC) systems for hospitals and clinics. Currently the company's staff is overloaded with design work. There i

How many cells must be used to represent each constraint, In excel how many...

In excel how many cells should be used to represent each constraint?

Implementation of the cost of quality, Question: What are different con...

Question: What are different conditions which a company has to make sure before the implementation of the Cost of Quality? Description/Definition of cost of Quality • The

Frameworks for developing performance measures, Frameworks for Developing P...

Frameworks for Developing Performance Measures  There are a number of approaches which will be described here in broad terms:  The Kaplan and Norton balanced scorecard

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