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 google''s customer value proposition, Describe Google's customer va...

Describe Google's customer value proposition and profit formula linked to its business model. What strategies has Google relied upon to build competitive advantage in the industry?

Types of process technologies - project, Types of Process Technologies - Pr...

Types of Process Technologies - Project Project technology deals with one of kind products that are tailored to the unique requirements of each customer. A general constructio

Explain hr provides managers with data to make decisions, Evidence-based HR...

Evidence-based HR provides managers with data to make decisions, instead of just relying on intuition. True False

Explain larry is likely liable for a battery, Larry is upset with his roomm...

Larry is upset with his roommate Bill because he refuses to clean up after himself. In a fit of rage, Larry tries to slap Bill in the head, but he misses. At the time, Bill is turn

Explain a ethical dilemma what was the situation, Describe a ethical dilemm...

Describe a ethical dilemma ( be detailed)? What was the situation? Who did it involve? Why? What happened? What was and wasn't done?

Lysosomes, Lysosomes Lysosomes were first discovered by Christian de Du...

Lysosomes Lysosomes were first discovered by Christian de Duve. Unlike other organelles which were detected by microscbpe, these were first discovered biochemically. Later, ele

Explain dispute arises the hotel management, A famous New York City hotel, ...

A famous New York City hotel, Hotel Lux, is noted for its food as well as its luxury accommodations. Hotel Lux contracts with a famous chef, Chef Perlee, to become its head chef at

Principle of scheduling, Principle of Scheduling First Principle optim...

Principle of Scheduling First Principle optimum Task Size : scheduling tens to achieve its maximum efficient task sizes are small and all tasks are of the same order of magnit

Objectivise and benefits of work study, Objectivise and Benefits of Work St...

Objectivise and Benefits of Work Study Objectivise of Work Study a)Provide more and improved physical means to motivate the workers. b)Improve the basic process by resear

Explain self-awareness and empathy, The perceptual distortion of projection...

The perceptual distortion of projection can be controlled thru a high degree of/ 1.ethical behaviour/2.cognitive consistency/3.emotional discernment/4. self-awareness and empathy/5

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