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 lower control limits for mean and range charts, Determine upper and...

Determine upper and lower control limits for mean and range charts.

Explain what are the issues of management does google needs, What are the i...

What are the issues of management does Google strategy 2010 needs to address? How could they be analysed and evaluated?

Explain sample means and sample ranges have been computed, Checkout time at...

Checkout time at a supermarket is monitored using a range and mean chart. Six samples which contain 20 observations per sample have been collected and the sample means and sample r

Describe how erp systems can achieve business integration, Question 1: ...

Question 1: Describe how ERP systems can achieve business integration Analysis of conventional company information systems with respect to ERP packages examples con

Explain the roles of the defense contract management agency, What are the r...

What are the roles and responsibilities of the Defense Contract Management Agency

Describe the impact of social networking, Discuss the impact of social netw...

Discuss the impact of social networking in computing today, and in the future five years

Explain the current break-even point in dollars is, The local convenience s...

The local convenience store makes bread. Currently, their oven can produce 50 pieces of bread per hour. It has a fixed cost of $2,000, and a variable cost of $0.25 per bread. The o

Human resource practices which can impede customer service, Identify three ...

Identify three human resource practices that can impede customer service employees from delivering high quality service. Describe how you would modify each practice to promote high

How to determine the capacity requirements, Electronics assembly operates t...

Electronics assembly operates two 8 hours shifts for 275 days per year. Use this information in the table to determine the capacity requirements. Cell Phone Demand forecast (phones

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