The Elsmar Cove Business Standards Discussion Forums More Free Files Forum Discussion Thread Post Attachments Listing Elsmar Cove Discussion Forums Main Page
Welcome to what was The Original Cayman Cove Forums!
This thread is carried over and continued in the Current Elsmar Cove Forums

Search the Elsmar Cove!

Wooden Line
This is a "Frozen" Legacy Forum.
Most links on this page do NOT work.
Discussions since 2001 are HERE

Owl Line
The New Elsmar Cove Forums   The New Elsmar Cove Forums
  Statistical Techniques and 6 Sigma
  Run Charts

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone! next newest topic | next oldest topic
Author Topic:   Run Charts
Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
Registered:

posted 11 July 2000 07:12 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
I admit ignorance in matters of Run Charts.

1. Does one compute control limits for run charts? If so, what is the basic methodology?

2. What is the intent (Value? Role?) of a run chart?

[This message has been edited by Marc Smith (edited 11 July 2000).]

IP: Logged

Jim Biz
Forum Wizard

Posts: 275
From:ILLINOIS
Registered: Mar 2000

posted 11 July 2000 08:01 AM     Click Here to See the Profile for Jim Biz   Click Here to Email Jim Biz     Edit/Delete Message   Reply w/Quote

Run charts are simply plots of process characteristics against time or in chronological sequence. They do not have statistical basis, but are useful in revealing
trends
relationships between variables


Check out this site for Run chart details -
http://lorien.ncl.ac.uk/ming/spc/spc0.htm

Regards
Jim

[This message has been edited by Jim Biz (edited 11 July 2000).]

IP: Logged

Marc Smith
Cheech Wizard

Posts: 4119
From:West Chester, OH, USA
Registered:

posted 11 July 2000 08:10 AM     Click Here to See the Profile for Marc Smith   Click Here to Email Marc Smith     Edit/Delete Message   Reply w/Quote
Thanks. That's pretty much as I understood them - just a 'view' of a process trend. But - I still don't understand how control limits would be computed.

IP: Logged

Jim Biz
Forum Wizard

Posts: 275
From:ILLINOIS
Registered: Mar 2000

posted 11 July 2000 10:59 AM     Click Here to See the Profile for Jim Biz   Click Here to Email Jim Biz     Edit/Delete Message   Reply w/Quote
IMHO "computed limits" should in most cases not be part how they are used. Although a reasonable upper or lower "Goal" could be "chosen" depending on the variables interaction within a given timeframe. They can however be used to pass information along to the interested party.... Example If I change "A" what happens to "B" and how long does any change take to show an effect.

Regards
Jim

IP: Logged

All times are Eastern Standard Time (USA)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply Hop to:

Contact Us | The Elsmar Cove Home Page

Your Input Into These Forums Is Appreciated! Thanks!


Main Site Search
Y'All Come Back Now, Ya Hear?
Powered by FreeBSD!Made With A Mac!Powered by Apache!