iSixSigma

raf

Activity

  • raf replied to the topic QFD – HOQ matrix in the forum General 16 years ago

    Thanks Andy,
    Yes, I know what the symbols mean. My question is really, do we assign a strong relationship also when the technical characteristic has a negative impact on a certain need ?
    Take for exmaple the well known mouse trap example. A higher striking force kills the mouse faster so this is a high correlation because it fulfills that need.…[Read more]

  • raf replied to the topic DOE Discrete output in the forum General 18 years, 9 months ago

    I think there’s no problem using a discrete output for DOE except that you will need a lot of samples for each run.  As a rule of thumb, you have to get an average of 5 good and 5 bad parts for each run to invoke Normality of data.
    Hope this helps