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

Least factors to a project manager when building a team, Compare and contra...

Compare and contrast attributes that are most and least important to a project manager when building a team. Provide a work or project example to support your answer. Back up your

Explain market presence to multiple international venues, Before you answer...

Before you answer this discussion question do a little Internet research. Identify and discuss a company that has had great success in expanding its market presence to multiple int

Explain changes in the environment, What changes in the environment provide...

What changes in the environment provided the opportunity for the Dewmocracy approach?

Determine the order winning criteria for organisation, 1. What are the orde...

1. What are the order winning criteria for this organisation? Where does the company sit in Schmenner's Service-Process matrix and can you detect the adoption of the principles und

Define elasticity of demand, In considering the price part of the 4Ps, and ...

In considering the price part of the 4Ps, and the customer demand aspect of that, I'd like you to leave this course knowing about "elasticity of demand". Can you explain how that c

Explain matching supply with demand, From "Matching Supply with Demand" Cac...

From "Matching Supply with Demand" Cachon/Terwiesch (Inventory Cost) A manufacturing company producing medical devices reported $60,000,000 in sales over the last year. At the e

Volume flexibility - customers needs for a product, Volume Flexibility - Cu...

Volume Flexibility - Customers Needs For a Product The readiness with which the operation systems output can be adjusted in response to sharp changes in customer demand. Produ

Industrial society - operations function, Industrial Society - Operations F...

Industrial Society - Operations Function In the industrial society, estimated during the period of growth of industrialisation roughly 1820-1920, machines and the production o

Explain a production manager at a contour manufacturing, A production manag...

A production manager at a Contour Manufacturing plant has inspected the number of defective plastic molds in five random samples of 30 observations each. Following are the number o

Explain most important consideration of pre-employment, From the case study...

From the case study, determine what ideals, obligations, and effects must be considered in using psychological tests as pre-employment screens. Decide which the most important cons

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