1 The key requirements probably won’t require explicit support plans. However, if they do, QFD can be used to evaluate the plans. Key requirements QFD should be handled separately.
2 Although the analysis is easier with special software, you can obtain a good approximation using a spreadsheet. See the Appendix for details.
3 See the Appendix for an example of how to derive approximate importance weights using Microsoft Excel.
4 Eliyahu M. Goldratt, The Haystack Syndrome: Sifting Information Out of the Data Ocean, North River Press, Great Barrington, MA, 1990, pp. 59-63.
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