Speedometer-Cable Shrinkage

Keywords: fractional design, Taguchi design, two-level design, dispersion effects.

Description

The data set comprises the results of a saturated 2^15-11 fractional factorial with 4 observations per run. There were 15 controllable factors. The responses are the proportional shrinkage of four samples taken from 3000-foot lengths of speedometer cable manufactured at each set of conditions. The objective was to reduce the post-extrusion shrinkage of the speedometer casing.


	Variable		Description

	A		line OD
	B		liner die
	C		liner material
	D		liner line speed
	E		wire braid type
	F		braiding tension
	G		wire diameter
	H		liner tension
	I		liner temperature
	J		costing material
	K		coating die type
	L		melt temperature
	M		screen pack
	N		cooling method
	O		line speed
	y1		shrinkage value of first sample
	y2		shrinkage value of second sample
	y3		shrinkage value of third sample
	y4		shrinkage value of fourth sample

Note: the data actually give columns for -L, -J, -I, -E, -C and -O as in Box (1988).

Download

Data File (tab-delimited text)

Source

Quinlan, J. (1985). Production improvement by application of Taguchi methods. Amer. Supplier Inst. News, special symposium edition, 11-16.

Box, G. E. P. (1988). Signal-to-noise ratios, performance criteria and transformations. Technometrics 30, 1-17.

Nelder, J. A., and Lee, Y. (1991). Generalized linear models for the analysis of Taguchi-type experiments. Applied Stochastic Models and Data Analysis 7, 107-120.

Lee, Y., and Nelder, J. A. (1998). Generalized linear models for the analysis of quality-improvement experiments. Canadian Journal of Statistics 26, 95-105.