4. Analysis for Classified, Raking, Ratio, Missing, and Operating Window Data

There are times when it is not possible to obtain the experimental results of research as a continuous quantity. It is expressed as the passing rate, which classifies the products into acceptable and unacceptable products, and the non-defective product ratio, which classifies the non-defective products into non-defective products. In addition, there are often missing samples, conditions that cannot be synthesized, and samples that exceed the measurement range. Here, we show (1) classification value/rank data (Mori, T.: Application and mathematics of the Taguchi method. Chapter 13.4: Analysis of classification value and ranking data, p. 264, Mori Consulting Office (2005)), (2) data (Mori, T.: Pocket Guidebook, Processing method when data cannot be obtained (Processing of missing data), pp. 26–27. Mori Consulting Office (2009)), (3) missing values, and (4) functional window analysis method.