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

Decision making process for ethical solution, Profits have been decreasing ...

Profits have been decreasing and power plant executives are considering whether to use a production process that decreases costs (and therefore increases profits) but adds to the p

Work study, link between work study and value analysis?

link between work study and value analysis?

Explain some of the near-term and long-term results, As the industry watche...

As the industry watches to see how United Airlines' strategy performs against American Airlines' strategy, management at United Airlines is anxiously monitoring market signs to det

Predetermined time standards (pts) - process design, Predetermined Time Sta...

Predetermined Time Standards (PTS) - Process Design This is a work measurement technique whereby times established for basic human motions (classified according to the nature

Production and Planning Control, A company is setting up an assembly line t...

A company is setting up an assembly line to produce 192 units per eight-hour shift. The following table identifies the work elements, items, and immediate predecessors. Questions:

Influence training a class of persons, What value would it be to know that ...

What value would it be to know that you were going to be training a class of persons between the ages of 20 to 35? Would it influence the approach you would take? How?

Must adobe establish a policy for granting flexible work, Should Adobe esta...

Should Adobe establish a policy for granting flexible work schedule? If yes what might that policy contain?

Compute the number of people involved in the processing, Analyze and evalua...

Analyze and evaluate the processing of new application at the CEUPU: - Create a process map for new applications - Calculate the time needed to process an individual application cy

Explain what are different ways to test would it works, 1) One change metho...

1) One change method is to encourage testing activities throughout the change process. "Piloting" ideas throughout the change process gives opportunities that are safe to challenge

Explain same day delivery manufacturing process, Describe FedEx Office and ...

Describe FedEx Office and Same Day delivery manufacturing process and scheduling approach

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