29.
如何寻找核心少数的要素(X) 和 味道(Y) 的关系呢?
比较:仔细进行实验
焦点: Oven 温度 325~375度
3个商标的面粉
RUN 温度 面粉商标
1 325 A
2 325 B
3 325 C
4 350 A
5 350 B
6 350 C
7 375 A
8 375 B
9 375 C 面 粉 面粉 面粉Brand ABrand BBrand C结果: 350度,商标为A的面粉是最佳的组合 注意:对于时间而言,
只有有影响的温度才是
重要的要因 Step 8. Y 与核心少数 X 之间 正常关系把握I改善
72. Six Sigma Success StoryMotorola ROI
1987-1994
Reduced in-process defect levels by a factor of 200.
Reduced manufacturing costs by $1.4 billion.
Increased employee production on a dollar basis by 126%.
Increased stockholders share value fourfold.AlliedSignal ROI
1992-1996
$1.4 Billion cost reduction.
14% growth per quarter.
520% price/share growth.
Reduced new product introduction time by 16%.
24% bill/cycle reduction.General Electric ROI
1995-1998
Company wide savings of over $1 Billion.
Estimated annual savings to be $6.6
Billion by the year 2000.回报
73. 050010001500200025001996199719981999 estimateCostBenefitSix Sigma Progress (in millions)6 Sigma项目的进程百万投资
收益Six Sigma Success Story