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 how would you measure marketing productivity, How would you measure...

How would you measure marketing productivity? What measures would you use and why? Explain.

I have some charts that i need help to put it in excel, I have soem charts ...

I have soem charts that were done i word how do I gt them to you for someone to put in excel for me

What is grapevine, What is Grapevine? Ans: Grapevine is an informal ...

What is Grapevine? Ans: Grapevine is an informal communication system.

Operations challenges, Task 1 Read: Chapter 1 of the core learning material...

Task 1 Read: Chapter 1 of the core learning material and supporting text book chapters which relate to Operations Management. Choose an organisation with which you are either in

Define internal vs external recruiting, Compare internal vs external recrui...

Compare internal vs external recruiting. When would you want to use each option? what are some advantages and disadvantages of each?

Calculate electrical, Test results from an electronic circuit board indicat...

Test results from an electronic circuit board indicate that 50% of board failures are caused by assembly defects, 30% are due to electrical components, and 20% are due to mechanica

Explain statement is true with respect to job satisfaction, Which of the fo...

Which of the following statement is true with respect to job satisfaction and performance/ a. reward do not cause job satisfaction/ b. job satisfaction does not cause performance/

Explain cars tend to break down at the rate of two per hour, During the cam...

During the campus Spring Fling, the bumper car amusement attraction has a problem of cars becoming disabled and in need of repair. Repair personnel can be hired at the rate of $20

Explain when is it said to have a normal distribution, When a value of a va...

When a value of a variable(like the possible number of people who might be interested in your product) is said to have a normal distribution, how do the highest and lowest possible

Define construct a stem-and-leaf display, Use the data in Exhibit 16-5 to c...

Use the data in Exhibit 16-5 to construct a stem-and-leaf display

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