Control chart - sample mean chart & sample range chart, Operation Management

Assignment Help:

Control Chart - Sample Mean Chart & Sample Range Chart

As sample values are progressively plotted on the charts, they are examined for patterns which may be tested against a set of rules-of- thumb, as shown in the figure overleaf. This figure shows some examples of limits being exceeded. For example, if a single sample means breaches an action limit, the probability (1-in- 1000) that this would be obtained from a stable process is so low it is deemed to be more likely that the process has changed. The process should be stopped and investigated. If within any sequence of 10 plots you find one above the upper warning limit and one below the lower warning limit, this is statistically so unlikely that you should stop the process to investigate. Similarly, the occurrence of two consecutive sample means breaching a warning limit is so unlikely that, again, the process would be stopped and investigated.

895_Control Chart - Sample Mean Chart & Sample Range Chart.png


Related Discussions:- Control chart - sample mean chart & sample range chart

Explain customers preferred bidders list for future contract, A customer is...

A customer is unhappy with the performance thus far on a project. The customer states that, unless scope changes are made at the contractors expense, the contractor would be remove

Create an is strategy for an organisation, 1. Create an IS strategy for you...

1. Create an IS strategy for your organisation.  2. Give examples of the Data, Information and Knowledge that are used in your organisation. 3. How would the idea of sustaini

Explain the forecast for aug based on a weighted moving, What is the foreca...

What is the forecast for Aug based on a weighted moving average applied to the following past demand data and using the weights: 5, 3, 1.5? (largest weight is for most recent data)

Explain human resource objectives essential for the company, Why do human r...

Why do human resource objectives essential for the company to succeed?

Explain practical lessons derived from equity theory, Type your question he...

Type your question here to what extent are Michelle Rhees changes consistent with the practical lessons derived from equity theory? Explain.

Explain what are competencies, What are "competencies?" Explain, and provid...

What are "competencies?" Explain, and provide two or three examples.

Explain king henrys impact on the rule of law, Answer the following questio...

Answer the following questions on the Topic of The History of the American Corporation 1. Describe what is the rule of law and its importance on a successful capitalistic socie

Layout, what are the objectives that an operation should seek in order to e...

what are the objectives that an operation should seek in order to ensure a good layout?

Explain main benefits of the just-in-time system, 1) What are at least thre...

1) What are at least three main benefits of the just-in-time system? Present and explain them 2) What are at least three main drawbacks/problems of the just-in-time system? Pres

Explain federal mediation and conciliation service, Based on the most curre...

Based on the most currently reported data by the American Arbitration Association and the Federal Mediation and Conciliation Service, you should factor all but one of the following

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