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 what is its current yield, Consider a $1,000 par value, 7% annual c...

Consider a $1,000 par value, 7% annual coupon bond. The bond matures in 9 years. Assuming the bonds required return is 10%, what is its current yield? (Semi-annually compounding)

Potential advantages, Book Edition Company Book Edition Company p...

Book Edition Company Book Edition Company produces very rare cover pages for history books. Reader habits change a lot and they change their mind a lot. The cover pages a

Plan a policy for scheduling vacations, Outline a policy for scheduling vac...

Outline a policy for scheduling vacations for a Health Information Management Department that provides daily, around-the-clock service and has both full time and part time employee

Explain what factors have contributed to its growth, When was the Mexican a...

When was the Mexican aerospace industry established and what factors have contributed to its growth?

Explain what is the expected growth rate, Sidman Products' common stock cur...

Sidman Products' common stock currently sells for $51 a share. The firm is expected to earn $6.10 per share this year and to pay a year-end dividend of $2.40, and it finances only

Explain when quality discounts are introduced, When quality discounts are i...

When quality discounts are introduced, will optimum order quantity be made smaller, unchanged, or larger? Illustrate by using a numerical example.

Explain path for data between two points on a network, Name 3 factors that ...

Name 3 factors that a router must consider when determining the best path for data between two points on a network?

Describe line and staff organisation, Describe line and staff organisation....

Describe line and staff organisation. Line and Staff Organisation: As the industry grow in size and complexity, the line executives could not perform appropriately all other

Explain acronym ltpd, Explain acronym LTPD. Ans: The acronym LTPD is...

Explain acronym LTPD. Ans: The acronym LTPD is Lot Tolerance Percent Defective.

Explain that they receive the training they need, The Chief Projects Office...

The Chief Projects Officer (CPO) is responsible for the individuals working on a project in all of the following way EXCEPT: A. That they perform project activities according to

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