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

Describe the general environmental challenges, 1. Describe and discuss an o...

1. Describe and discuss an organization's task environment. Discuss how the elements within the task environment would impact an organization such as Microsoft Corporation. 2. Disc

Explain descriptive statistics, Descriptive Statistics: Ages Variable Me...

Descriptive Statistics: Ages Variable Mean StDev Minimum Q1 Median Q3 Maximum Ages 23.56 8.97 17.00 18.25 21.00 23.75 49.00 1) Describe the shape of the data 2) What pe

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

Describe barcelona restaurant group quality, From the video "Barcelona Rest...

From the video "Barcelona Restaurant Group", determine how the same focus on quality demonstrated by the Barcelona Restaurant Group could benefit manufacturing operations. Provide

Explain making better business decision, Making Better Business Decision: D...

Making Better Business Decision: Do you provide the quizzes/exams questions for this book?

What are the advantages of process mapping, What are the advantages of proc...

What are the advantages of process mapping? Advantages of process mapping are as follows: a. It can be used for structured ‘walk by testing to confirm knowing of workflow, c

What is the average number of customer waiting, Andrew the barber owns a fo...

Andrew the barber owns a four chai shop. Andrew estimated that each barber would take an average of 30 min to give a haircut in an exponentially distribution fashion. Customers arr

The acronym sdlc relates to which cycle, The acronym SDLC normally relates ...

The acronym SDLC normally relates to It relates to system (or software) development lifecycle

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