Welcome to what was The Original Cayman Cove Forums! This thread is carried over and continued in the Current Elsmar Cove Forums

This is a "Frozen" Legacy Forum.
Discussions since 2001 are HERE

 The New Elsmar Cove Forums The New Elsmar Cove Forums   Statistical Techniques and 6 Sigma   six sigma formulas and tables.    profile | register | preferences | faq | search
 Author Topic:   six sigma formulas and tables. WALLACEForum Contributor Posts: 46From:Ontario, Canada.Registered: Nov 2000 posted 06 May 2001 09:38 PM                I am looking for a list of Six Sigma formulas and the explanation of these formulas with sigma and yield tables, Any body help?Thanks in advance.Wallace.IP: Logged Ken K.unregistered posted 08 May 2001 09:06 AM               I think you need to be more specific about formulas you're asking for.I'll give you a few and see if that's what you're asking for:DPU=Defects/UnitsDPMOp=DPMO=PPM=Total 1,000,000*(Defects/Opportunities)DPMOp=1,000,000*(DPU/OpportunitiesSIGMA = SQRT(LN(1/(1-EXP(-DPMOP/1000000))^2))-(2.55155+0.802853*SQRT(LN(1/(1-EXP(-DPMOP/1000000))^2))+0.010328*SQRT(LN(1/(1-EXP(-DPMOP/1000000))^2))^2)/(1+1.432788*SQRT(LN(1/(1-EXP(-DPMOP/1000000))^2))+0.189269*SQRT(LN(1/(1-EXP(-DPMOP/1000000))^2))^2+0.001308*SQRT(LN(1/(1-EXP(-DPMOP/1000000))^2))^3)+1.5where DPMOP=defects per million opportunitiesFirst Time Yield=#UnitsPassing1stInspection/#UnitsInspectedapprox= e^-DPURolledUpYield=#UnitsCompleteingProcess/#UnitsProcessedapprox= e^(DPU1+DPU2+DPU3...)where DPU1, DPU2, DPU3 represent the defect rate of process steps 1`, 2, 3, ...Also check out some of the information on http://www.isixsigma.com IP: Logged WALLACEForum Contributor Posts: 46From:Ontario, Canada.Registered: Nov 2000 posted 09 May 2001 05:28 PM                Thanks Ken k,I am just getting started in six sigma and, I feel overwhelmed by all of the Mathematical formulas that are used to calculate the most common used functions of six sigma, I guess I need to get familiar with the most commonly used calcualtions.Wallace.IP: Logged Greg MackForum Contributor Posts: 37From:Sydney, NSW, AustraliaRegistered: Feb 2001 posted 10 May 2001 02:57 AM                Just take the normal factors for computing central lines and 3 sigma control limits for X-Bar, s and r charts. A cpk of 2 equals 6 sigma.That's probably about as basic as it gets.IP: Logged
 All times are Eastern Standard Time (USA) next newest topic | next oldest topic Administrative Options: Close Topic | Archive/Move | Delete Topic Hop to: Select a Forum or Archive List of Forums: Category: General Quality Topics --------------------Measurement, Test and CalibrationStatistical Techniques and 6 SigmaDocumentationNonconformance and Corrective Action SystemsContinuous ImprovementBenchmarkingTPM - Total Productive MaintenanceBaldrige National Quality AwardTQM - Total Quality ManagementMiscellaneous Quality TopicsBook ReviewsQuality Assurance SoftwareOccupations in Quality Assurance Category: National & International Standards --------------------ISO 9001/4:2000ISO 9000:1994ISO 14001 And Other Environmental SpecsGeneral ISO TopicsBS8800 & OHSAS 18001FDA and Medical DevicesAS 9100TL 9000 Category: Auditing and Registrars --------------------AuditingRegistrars and Registration Category: Automotive Related --------------------TS 16949QS-9000Tooling and Equipment SuppliersForo en Espa–olAPQP and PPAPFMEA and Control PlansEmbedded Devices and Control SoftwareVDA Volumes Including 6.1 Category: Guide Buyers Forums --------------------Guide Pre-Purchase QuestionsGuide Post-Purchase Questions Category: Software Quality Assurance --------------------Linux InfoTickit Scheme ForumSoftware Quality AssuranceInternet History Category: Odds and Ends --------------------Used - Buy and SellForums - How Do They Work? Suggestions!Company Advertisements - Free Offers, etc. List of Archives: PoliticsJokes