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House of Quality - interrelationship matrix

This house of quality sample illustrates interrelationship matrix. It was designed on the base of the figure 3-4 in Lecture "How QFD helps in product quality improvement?" from the website of National Programme on Technology Enhanced Learning (NPTEL), India. [nptel.ac.in/courses/110101010/downloads/mod3/Module%20III-Lec1.pdf] Distributed under Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) [creativecommons.org/licenses/by-sa/4.0/] "The next step in building a house of quality is to compare the VOC with technical characteristics and determine their interrelationships. In this context, engineering knowledge about the product and historic evidence/ data can provide useful information. Common practice is to use symbols to represent the nature of relationship between customer requirements and technical descriptors. Symbols used are: - A solid circle represents a strong relationship (scored as +9). - A single circle represents a medium relationship. (scored as +3). - A triangle represents a weak relationship (scored as +1). - The box is left blank if there is no relationship between VOC and technical characteristics. Figure 3-4 provides the interrelationship matrix with type of relationships. Any cell that is empty implies no or insignificant relationship." [nptel.ac.in/courses/110101010/modules/module3/lec1/1.6.html] The HOQ example "House of Quality - interrelationship matrix" was designed using ConceptDraw PRO software extended with House of Quality solution from Quality area of ConceptDraw PRO Solution Park.
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