ISBN : 978-81-963532-2-3 (E-Book) Fig.29.3:LevelsofPSP PSP2 introduces defect management via the use of checklists for code and design reviews. Thechecklistsaredevelopedfrom gatheringandanalyzingdefect dataearlierprojects. SixSigma The purpose of Six Sigma is to improve processes to do things better, faster, and at lower cost. Itcan be used to improve every facet of business, from production, to human resources, to orderentry, to technical support. Six Sigma can be used for any activity that is concerned with cost,timeliness,and qualityofresults. Therefore,it is applicable to virtuallyeveryindustry. Six Sigma at many organizations simply means striving for near perfection. Six Sigma is adisciplined, data-driven approach to eliminate defects in any process – from manufacturing totransactionaland productto service. The statistical representation of Six Sigma describes quantitatively how a process is performing.ToachieveSixSigma,aprocessmustnotproducemorethan3.4defectspermillionopportuni ties. A Six Sigma defect is defined as any system behavior that is not as per customerspecifications. Total number of Six Sigma opportunities is then the total number of chances for adefect.Process sigma can easilybecalculated usingaSixSigmacalculator. ThefundamentalobjectiveoftheSixSigmamethodologyistheimplementationofameasurementbasedstrategythatfocusesonprocessimprovementandvariationreductionthroughtheapplicationofSix Sigmaimprovementprojects.ThisisaccomplishedthroughtheuseoftwoSix Sigmasubmethodologies:DMAICandDMADV.TheSixSigmaDMAICprocess (define, measure, analyze, improve, control) is an improvement system for existingprocesses failing below specification and looking for incremental improvement. The Six SigmaDMADV process (define, measure, analyze, design, verify) is an improvement system used todevelop new processes or products at Six Sigma quality levels. It can also be employed if acurrent process requires more than just incremental improvement. Both Six Sigma processes areexecuted by Six Sigma Green Belts and Six Sigma Black Belts, and are overseen by Six SigmaMasterBlackBelts. Many frameworks exist for implementing the Six Sigma methodology. Six Sigma Software Engineering Keerthana P, Manasa KN, Ganga D Bengal 141
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