On Attraction of Taguchi Method

Abstract

This paper reviews my several works regarding Taguchi method. Firstly, confounding pat terns between main effect and interaction in mixed level orthogonal arrays are clarified. Sec ondly, a new decomposition of total sum of squares in two-way layout composed of signal factor and noise factor is shown. Numerical example is also discussed. Thirdly, statistical tests for signal-to-noise ratios are investigated based on classification for scale of signal and response variable.