Speedometer cables can be noisy because of shrinkage in the plastic casing material. An experiment was conducted to find out what caused shrinkage by screening a large number of factors. The engineers started with 15 different factors.
The dataset contains the following variables: (variables a-o are 2 level factors, coded "+" and "-" where "+" indicates a higher value where appropriate)
liner outer diameter
liner line speed
wire braid type
coating die type
percentage shrinkage per specimen
G. P. Box and S. Bisgaard and C. Fung (1988) "An explanation and critque of Taguchi's contributions to quality engineering", Quality and reliability engineering international, 4, 123-131
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