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 products and convincing local customers, You are the Customer Servi...

You are the Customer Service Manager for a US manufacturer and have fielded a phone call from the Japanese Distributor of your products in Japan. She informs you that a major local

Define conflict within a project team, What are the consequences of ignorin...

What are the consequences of ignoring a conflict within a project team?

Assignment 2000 words, Assignment EITHER A. Practical application of concep...

Assignment EITHER A. Practical application of concepts in a local organisation • You are required to analyse and evaluate a key aspect of operations management covered in this subj

Explain demand for product is not a constraint, Which of the following is t...

Which of the following is true? Once you complete the five steps, the process is complete Another constraint will always appear when the original constraint is broken Dema

Linear programming, A paper mill produces two grades of paper viz., X and Y...

A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i

Define globalization and it impacts your current position, Describe globali...

Describe globalization and how it impacts your current or future position as part of an international workforce.

Explain employee stock ownership plans, State the reasons why historically,...

State the reasons why historically, union leaders did not support Employee Stock Ownership Plans (ESOPs)? Why has there been a notable growth since 1975 in these plans? Outline the

Explain identifying and developing global leaders, Identifying and developi...

Identifying and developing global leaders is a key concern for international companies. Compare and contrast the skills and context of the traditional / national manager with that

Supply chains using the order-up-to inventory model, Demand for Caruso's Fr...

Demand for Caruso's Frozen Pizza (CFP) is normally distributed. The demand for CFP averages 400 per day with a standard deviation of 200. Weekly demand (5 days) averages 2,000 unit

Explain most apprenticeship programs are in skilled trades, 1. Which one of...

1. Which one of the following statements is NOT true of apprenticeships? Most apprenticeship programs are in the skilled trades. A major advantage of apprenticeships is the a

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