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

What are current examples of unethical business decisions, What are recent ...

What are recent examples of unethical business decisions that have had a large impact on society?

Calculate a tracking signal for months, The following are monthly actual an...

The following are monthly actual and forecast demand levels for May thru December for units of a product manufactured by the N. Tamimi Pharmaceutical Company: Month Actual Deman

Explain los angeles court syestem, I need Los Angeles Court Syestem. I need...

I need Los Angeles Court Syestem. I need orginal thought no plagerism or won't award points. Assignment Complete the following, placing it in a single Word document. You h

Explain how does safety management address fatigue issues, Fatigue is a maj...

Fatigue is a major safety concern in the aviation industry. How does safety management address fatigue issues yet accomplish the job without incurring more costs in the company. We

Explain both or either of burglary and felony murder, Doug enters Jane%u201...

Doug enters Jane%u2019s residence through an unlocked window that he lifts open at midnight, intending to steal her first edition copy of Sense & Sensibility, which he knows was re

Explain what order quantity will enable the refinery, A refinery in Houston...

A refinery in Houston replaces all of the 3" full-open ball valves in its facility according to a very strict maintenance policy which spaces replacements fairly uniformly througho

Explain management techniques, Provide two examples of current leaders and ...

Provide two examples of current leaders and describe how they demonstrate their leadership characteristics. What separates these characteristics from management techniques? How eff

Explain project activity including personal time, A cost estimate for a giv...

A cost estimate for a given project activity is $6,300; this cost estimate does not factor in personal time. Assuming that an allowance for personal time is 9.5%, the total estimat

Explain the similarities and differences of tqm, Describe the similarities ...

Describe the similarities and differences between TQM and Six Sigma quality-management techniques.

LEAN STNCHRONIZATION, what are the wastes and how to overcome them?

what are the wastes and how to overcome them?

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