The test of the quality assurance methods involved the collection of relevant data and the analysis of the data by applying analysis of variance (ANOVA) procedures to the data. The ANOVA was performed using the data analysis tools in the Microsoft Excel spreadsheet program.
The quality assurance managers generated the required data by implementing the two new approaches to quality assurance measurement in two production areas. They collected data measuring faults per 1,000 in assembly operations where the two alternative approaches to quality assurance were implemented, and they collected comparable data from an assembly operation where the existing quality assurance procedure at the manufacturing plant was in effect.
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