Six Sigma discussion

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Tvab02

Business Finance

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In 1995 Jack Welch sent a memo to his senior managers telling them that they would have to require every employee to have started Six Sigma training to be promoted. Furthermore, 40 percent of the manager’s bonuses were to be tied to the successful introduction of Six Sigma. Do you believe that this directive was a motivational action, or did it violate W. Edwards Deming’s maxim that managers and leaders must “cast out fear”? Why or why not? Refer to this week’s lecture before crafting your post. Word count - 400

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Week Four Lecture Statistical Thinking and Application Chapter 10 describes concepts of statistics, statistical thinking, statistical methodology, sampling, experimental design, and process capability. Watch the following video for a few of the major reasons to study statistics: Statistics in Schools – Why Statistics? (Links to an external site.)Links to an external site. The following video is an example of some of the ways statistics are used within the U.S. Census Bureau: World Statistics Day: Statistics All Around Us (Links to an external site.)Links to an external site. Statistical Methods • • • Descriptive statistics Statistical inference Predictive statistics One of the biggest mistakes that people make in using statistical methods is confusing data sampled from a static population (cross-sectional data) with data sampled from a dynamic process (time series data). • • Enumerative study – analysis of a static population Analytic study – analysis of a dynamic time series Analysis of Variance (ANOVA) • • ANOVA is a methodology for drawing conclusions about equality of means of multiple populations. ANOVA tests the hypothesis that the means of all populations are equal against the alternative hypothesis that at least one mean differs from the others. Regression and Correlation • • Regression analysis is a tool for building statistical models that characterize relationships between a dependent variable and one or more independent variables, all of which are numerical. Correlation is a measure of a linear relationship between two variables, X and Y, and is measured by the (population) correlation coefficient. Six Sigma and Process Improvement Chapter 11 brings the Six Sigma concept into sharp focus, and builds on the need to integrate a performance management framework with operational requirements in managing quality. In this chapter, we introduce the statistical basis for Six Sigma, and outline the requirements for Six Sigma implementation. This chapter also extends the concepts of Chapter 10 on statistical thinking and introduces the 7 QC Tools used for kaizen -- continuous improvement -- Six Sigma and “lean” projects. • • • Juran defined breakthrough as the accomplishment of any improvement that takes an organization to unprecedented levels of performance. The objectives of Six Sigma often focus on breakthrough improvements that add value to the organization and its customers through systematic approaches to problem solving. “Six sigma” represents a quality level of at most 3.4 defects per million opportunities (dpmo). (In other words….99.99966% accuracy). Sigma (σ) is the Greek letter that is used to designate standard deviation. A six sigma quality level corresponds to a process variation equal to half of the design tolerance while allowing the mean to shift as much as 1.5 standard deviations from the target. DMAIC Methodology 1. 2. 3. 4. 5. Define Measure Analyze Improve Control The “Seven QC Tools” 1. 2. 3. 4. 5. 6. 7. Flowcharts Check sheets Histograms Cause-and-effect diagrams Pareto diagrams Scatter diagrams Control charts 8. Run charts show the performance and the variation of a process or some quality or productivity indicator over time in a graphical fashion that is easy to understand and interpret. They also identify process changes and trends over time and show the effects of corrective actions. Control Chart • • • • Focuses attention on detecting and monitoring process variation over time Distinguishes special from common causes of variation Serves as a tool for on-going control Provides a common language for discussion process performance A Pareto distribution is one in which the characteristics observed are ordered from largest frequency to smallest. A Pareto diagram is a histogram of the data from the largest frequency to the smallest.
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Running Head: SIX SIGMA

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Six sigma
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SIX SIGMA

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Over the years, the theorists and economists have developed different ways of improving
the quality of management. One of this method is a six sigma and process improvement whose
implementation helps in developing the quality of management. The method inapplicable in
management as it provides the necessary apparatuses that help in up surging the capability of the
management in improving the business processes. The main purpose of process improvement is
to curb the increase in defect as well as ensure the organizat...


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