Michael Mead,Do not insist, what you said makes no sense at all. you are suggesting that he increases his sample sizes and runs the capability studies as if the data were normal. And if he is “lucky, they will be high enough that your won’t need to worry about making an out-of-specification product”.Luck should not be invoked here. If you use…[Read more]
Ramon,I do not think that your problem has been clearly defined. You gave the input factors but you did not define what your output is and 3×3=9 does not mean much. You define your design in terms of full or fractional factorial and in terms of how many factors are involved and how many levels. If you have 3 factors using 3 levels, you will not…[Read more]
Ramon,The wait time does not follow a Poisson distribution, it follows the Exponential distribution. The two are close but different.
Poisson distribution applies to situations such as the probability for finding a defect on a machine, not the wait time because the time to wait is more of an interval on a continuum.
If you use Minitab, you…[Read more]
There is no AQL in Minitab. Control Charts are more often used and more effective than AQL. AQL is not the best tool to ensure that good quality products are delivered to customers.This what you should have told him!
No, Mikel Harry is the godfather of Six Sigma and Richard Schroeder is his friend and they have written an excellent book call “Six sigma process characterization’ a must read for all six sigma practitioners. A lot of people are very jealous of Dr. Harry because of his great contributions to quality improvement. I would classify him next to…[Read more]
People are an uncontrollable source of variation – common cause.
Have the people in the modern method group been assigned using any special classification methods? If so, these inputs could be used to design factors to partition the SS.
If the people in the two groups have been chosen as random and the desired outcome of the experiment will be…[Read more]
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