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 a popular concept in healthcare administration, A popular concept i...

A popular concept in healthcare administration these days is the service line. Let us put you in the CFO position for this question. For your own hospital, are you in favor of serv

Explain asset has negative risk, Suppose rf is 5% and rM is 10%. According ...

Suppose rf is 5% and rM is 10%. According to the SML and the CAPM, an asset with a beta of -2.0 has a required return of negative 5% [= 5 - 2(10 - 5)]. Can this be possible? Does t

Quality management., examples of internal and external failure cost

examples of internal and external failure cost

Explain pernille spiers-lopez''s individual characteristics, Complete the L...

Complete the Leadership in Action Ikea case on page 142-143 in your textbook on pernille spiers-lopez assembles a winning team at ikea .Answering the case questions involves ident

Line balancing of product layouts, Line Balancing of Product Layouts ...

Line Balancing of Product Layouts A major consideration in the design of product layouts is that of bottlenecks; just as the strength of a chain is determined by its weakest

Explain strategies should be considered if a small business, What strategie...

What strategies should be considered if a small business is setting prices for a product that is to be exported? How are these strategies different from those used in a domestic ma

Explain branding and packaging and labelling, First, visit a local retail s...

First, visit a local retail store and look at the brand names, package designs, and labels for various products. Choose one product that you think is a "good" example of these prod

Explain allowable standard deviation in the temperature, Rachel loves to ba...

Rachel loves to bake cookies, but she has an old oven that has trouble maintaining a constant temperature. if the acceptable temperature range for making the cookies is 350 plus or

Responsibilities of operation manager, Operations Management Activities - R...

Operations Management Activities - Responsibilities of Operations Managers The nature and responsibility of operations managers is changing. Once operations or production mana

Supply, Introduction about law of supply

Introduction about law of supply

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