Six Sigma
Introduction
Six Sigma is a highly disciplined process that helps us focus on developing and delivering near-perfect products and services. Why “Sigma”? The word is a statistical term that measures how far a given process deviates from perfection. The central idea behind Six Sigma is that if you can measure how many “defects” you have in a process, you can systematically figure out how to eliminate them and get as close to “zero defects” as possible. To achieve Six Sigma Quality, a process must produce no more than 3.4 defects per million opportunities. An “opportunity” is defined as a chance for nonconformance, or not meeting the required specifications. This means we need to be nearly flawless in executing our key processes.“WELL-ORGANISED COMMON SENSE”

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  • What is DMAIC

    Define
    The purpose of this step is to obtain a precise definition of a problem or issue that requires attention. The key here is not to focus on the outcome ( which is what most people generally do), but to concentrate your attention on the process that creates that outcome. This often requires detailed process mapping to be done so that all the stages in a process, how they link together and how they interrelate, are fully understood.
    Measure
    Once the problem and its potential causes are understood, you can move on to detailed measurement of all the elements in the process and what influence they have on each other. During this step it is important to focus on the parts of the process that are critical to quality - the ones that can be shown to have the greatest impact on the process outcomes. This step may also require some benchmarking to find parts of your business, or perhaps other businesses these maybe competitors or organisations in other sectors) that manage this process better. Ideally you will find the best there is to study and learn from.
    Analysis
    Having gathered all the necessary measurements you can then analyze them to establish how well or poorly the process is working, it’s full detrimental impact on the organization, the opportunities for improvement and the benefits that would result if it were improved. This analysis will show the gap between what is being achieved and what could be achieved, where improvements might be made and whether the investment needed would be justified by the return.
    Improve
    If step 3 has shown that worthwhile improvements can be made you then move on to step 4, where the improvements are implemented. The information gathered and analyzed in the previous steps will have pinpointed where the maximum returns are possible for the minimum investments. This is therefore where the efforts are focused to ensure that the process is improved in the precise areas and in the specific ways that will have the greatest impact on the outcomes.
    Control
    This step is needed to ensure that all gains made will remain as gains and will not be allowed to slip back. The purpose is to lock in your success through on-going monitoring and control processes that will guarantee no reversion to the previous, poor results.
    My Favourite Six Sigma Resources
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    EXCEL

     Six Sigma Worksheets ,  Hypothesis Testing Excel Workbook ,  3 Factor DOE ,  GANT Chart,  Simple Linear Regression,  DPMO Calculator,  Process Capability Study,  FIsh Bone,  Cause and Effect Matrix,  Gauge R & R,  Performance Gap Matrix,  Check Sheets,Pareto,  COPQ Templates,  Process Capability Study,  FMEA Worsheet,  Control Plan,  X -Y Prioritization Matrix,  Project Selection Matrix,  QFD,  Control Plan,  SIPOC,  Process Map

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     What is Six sigma  Various DMAIC Models  Excel Stat Guide  Excel Stat Function

    Case Studies

     Three Romeos And A Juliet

    Statistic Resources

     Statistics Stories  Statistics Book  HyperStat  Introductory Statistics  StatSoft Textbook  Vassar Stat  Java Demo For Probability  Probability Demo and Z table

    Six Sigma Defect Table

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