Any One Could Tell Me When I Should Use Cpk or Ppk? Thks!

	Bookmark This Page Email This Page Format for Printing Attach Document Show Entire Thread
	Search The Forum By Individual Post By Thread Past 1 Day of Posts Past 2 Days of Posts Past Week of Posts By Keyword or Phrase

Posted by: Praneet
Posted on: Wednesday, 6th June 2001, 12:00 AM.

Hi Preston,
I shall attempt to answer your query... Basically let us get the fundamentals clear.
Cpk = Basically means "Process Capability INdex" an index of how good ur process is.

Ppk = Process Performance Index, this index basically tries to verify if the sample that you have generated from the process is capable to meet Customer CTQ's (read requirements)It differs from Process Capability in that Process Performance only applies to a specific batch of material. Samples from the batch may need to be quite large to be representative of the variation in the batch. Process Performance is only used when process control cannot be evaluated. An example of this is for a short pre-production run.
Process Performance generally uses sample sigma in its calculation; Process capability uses the process sigma value determined from either the Moving Range , Range , or Sigma control charts.

The calculated Process Performance and Process Capability indices will likely be quite similar when the process is in statistical control.

One more suggestion , instead of manually computing the Cpk & PPk figure try using Minitab , a statistical Software for your computations.
WHen u enter the data for the process capability study the sotware generates a Graph which computes both the Cpk as well as Ppk ..
Hope I have helped you in clearing your doubts about Cpk & Ppk
Regards
Praneet

---

 Message Thread:

Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by preston on Wednesday, 6th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by sundeep singh on Wednesday, 6th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Chandrasekar on Tuesday, 16th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Mahesh Patil on Monday, 17th December 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Lolita on Monday, 17th December 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Chad Vader on Monday, 17th December 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Lolita on Monday, 17th December 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by hbgb b^2 on Monday, 17th December 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Lolita on Wednesday, 19th December 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Bucking-bronco on Wednesday, 19th December 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Manish on Sunday, 31st August 2008

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by hacl on Sunday, 31st August 2008

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by mohammed amrani on Tuesday, 6th May 2008

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by anil yadav on Thursday, 15th January 2009

Re: Any One Could Tell Me When I Should Use Cpk or P by Darth on Thursday, 15th January 2009

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by rookie on Wednesday, 11th November 2009

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Pradeep on Wednesday, 11th November 2009

Re: Any One Could Tell Me When I Should Use Cpk or P by Stan on Wednesday, 11th November 2009

Re: Any One Could Tell Me When I Should Use Cpk or P by Isaac on Wednesday, 11th November 2009

Re: Any One Could Tell Me When I Should Use Cpk or P by Tan on Wednesday, 11th November 2009

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Jsev607 on Thursday, 12th November 2009

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by E Hargrove on Wednesday, 4th June 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Gabriel on Wednesday, 4th June 2003

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Hemanth on Thursday, 5th June 2003

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Ron on Tuesday, 16th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Gabriel on Tuesday, 16th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Mark on Tuesday, 16th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by Praneet on Wednesday, 6th June 2001

Cpk or Ppk for Chemical Processes by vpschroeder on Wednesday, 29th September 2004

Re: Cpk or Ppk for Chemical Processes by migs on Wednesday, 29th September 2004

Re: Cpk or Ppk for Chemical Processes by Andy U on Thursday, 30th September 2004

What Is Cpk Stands For? (Acronim of Cpk) by Taufik Subagja on Wednesday, 30th March 2005

Re: What Is Cpk Stands For? (Acronim of Cpk) by Don LaDue on Tuesday, 10th May 2005

Re: What Is Cpk Stands For? (Acronim of Cpk) by Andy U on Wednesday, 11th May 2005

Re: What Is Cpk Stands For? (Acronim of Cpk) by Robert Tipton on Tuesday, 7th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by The New MB on Tuesday, 7th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Robert Butler on Tuesday, 7th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Robert Tipton on Tuesday, 7th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Stan on Wednesday, 8th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Robert Tipton on Monday, 13th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Jim Ace on Monday, 13th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Greg Kao on Monday, 13th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Jim Ace on Monday, 13th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Matt on Tuesday, 14th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Hardik on Tuesday, 14th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Matt on Tuesday, 14th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Hardik on Tuesday, 14th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Matt on Tuesday, 14th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Hardik on Tuesday, 14th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Matt on Wednesday, 15th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by accrington on Wednesday, 15th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Hardik on Wednesday, 15th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Hardik on Wednesday, 15th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Matt on Wednesday, 15th August 2007

Re: What Is Cpk Stands For? (Acronim of Cpk) by Jennifer on Monday, 13th August 2007

Re: Cpk or Ppk for Chemical Processes by Mike Robinson on Thursday, 28th December 2006

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by Ken on Wednesday, 6th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by Michael Whaley on Thursday, 7th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by SAMIR MISTRY on Saturday, 9th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by rich barber on Monday, 23rd February 2004

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Tottow on Monday, 23rd February 2004

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by Eoin on Thursday, 7th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by Jim Parnella on Thursday, 7th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by ed rosa on Thursday, 7th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by Kim Niles on Monday, 11th June 2001

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Rick Pastor on Wednesday, 17th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Gabriel on Thursday, 18th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Gabriel on Friday, 19th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Statman on Friday, 19th December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Rick Pastor on Monday, 22nd December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Statman on Monday, 22nd December 2003

Re: Any One Could Tell Me When I Should Use Cpk or by Statman Too on Monday, 22nd December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Rick Pastor on Sunday, 21st December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Gabriel on Tuesday, 23rd December 2003

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Rick Pastor on Sunday, 4th January 2004

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Gabriel on Monday, 5th January 2004

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Glen on Tuesday, 6th January 2004

Re: Any One Could Tell Me When I Should Use Cpk or Pp by Matt on Tuesday, 6th January 2004

Re: Any One Could Tell Me When I Should Use Cpk or Ppk? Thks! by Chantal on Tuesday, 10th July 2001

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Binh Nguyen on Wednesday, 21st August 2002

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Vincent on Thursday, 22nd August 2002

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Binh Nguyen on Friday, 23rd August 2002

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by manmath shankare on Tuesday, 24th April 2007

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by BOISROND on Wednesday, 4th January 2006

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Eddie on Thursday, 5th January 2006

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Flying Sigma Circus on Thursday, 5th January 2006

Re: Any One Could Tell Me When I Should Use Cpk or Ppk by Eddie on Thursday, 5th January 2006

---

Return To Discussion Forum

Post A New Message

Read the Forum Guide to Good Etiquette

Other Forums: Europe | Financial Services Healthcare | Software/IT

 

"The Bottom Line" Links

BEST SELLING PRODUCTS (iSixSigma Publications) Six Sigma Black Belt (DMAIC) Training Slides - 2009 Version! The 2009 Six Sigma Black Belt course includes over 40 more slides than the 2008 version. Contents include: 1,220 PowerPo... Certified Lean Six Sigma Black Belt Assessment Exam Interested in assessing your knowledge of Lean Six Sigma? Preparing for certifications? Testing your students and traine... Certified Lean Six Sigma Green Belt Assessment Exam This assessment exam is useful for students interested in assessing their knowledge of Lean Six Sigma on the Green Belt ... Certified Lean Six Sigma Black Belt E-book In 670 pages learn everything within the Lean Six Sigma DMAIC body of knowledge to successfully achieve Black Belt certi... Kaizen Workshop E-book This 150+ page ebook teaches key tools and techniques of Kaizen, as well as real application to enhance learning. Kaizen... Six Sigma Yellow Belt Training Slides - 2009 Version The 2009 Six Sigma Yellow Belt course is comprised of: 503 slidesInstructor notesSlide explanations15 data sets19 suppo... Design For Six Sigma (DFSS) E-Book or Print Need an "encyclopedia" consisting of many of the tools you’ll study? Need a helpful refresher to apply the DFSS process?... Sell Your Products