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 business model and strategies changed overtime, 1. Why has Southwes...

1. Why has Southwest's business model and strategies changed overtime? 2. In what ways is Southwest Trying to improve its competitive advantage in 2011? 3. Give examples of a

Describe setting up valid research designs in a company, Discuss setting up...

Discuss setting up valid research designs in a company, work environment

Explain many positive things about ipads, We have discussed many positive t...

We have discussed many positive things about iPads, iPhones, tablets and Smart Phones, what are some negative things you have experienced with the device you use?

Digitra; cell phone, Ask que Prepare Paul Jordan’s report to John Smithers ...

Ask que Prepare Paul Jordan’s report to John Smithers using regression analysis. Provide a summary of the cell phone industry outlook as part of Paul’s response. stion #Minimum 100

Explain safety inventory of coal and mro materials, A power plant in Califo...

A power plant in California uses coal at the rate of 100,000 pounds each day. It also uses MRO material at the rate of 1,000 pounds each day. The coal comes from Wyomung and the MR

Explain what will be her new productivity, Lori produces "Final Exam Care P...

Lori produces "Final Exam Care Packages" for resale by her sorority. She is currently working a total of 5 hours per day to produce 100 care packages. a) What is Lori's productivit

Explain meaning of disparate impact and disparate treatment, Your answers f...

Your answers for your two questions should total at least 200 words 1. How can employers guard against pay inequities in the workforce? 2. Explain the meaning of disparate i

Explain forecast including trend for the month, A manufacturer of printed c...

A manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. At the end of December, the company wishes to forecast sal

Explain the specific human resources concerns, Describe the specific human ...

Describe the specific human resources concerns (competencies, labour economics, legal & regulatory systems, labour relations & unionization, and cultural norms) for one chosen coun

Compute the cost per hire for the scenario, Calculate the cost per hire for...

Calculate the cost per hire for the following scenario. Show your calculation for partial credit. If you only provide one number, and it is incorrect, I will not know how close you

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