Saving runs in fractional factorial designs. Issue Volume 31:Issues 3(2019) (3rd July 2019)

• Record Type: Journal Article
• Authors: Grima, Pere; Rodero, Lourdes; Tort-Martorell, Xavier
• Is Part Of: Quality engineering. Volume 31:Issues 3(2019)
• Page Start: 375
• Page End: 385
• Publication Date: 2019-07-03
• Subjects: Factorial designs -- missing values -- negligible interactions -- saving runs -- lean designs; Quality control -- Periodicals; Production management -- Quality control -- Periodicals; 658.5
• DOI: 10.1080/08982112.2018.1526302
• Languages: English
• ISSNs: 0898-2112

Abstract

Abstract: When it is known a priori that some contrasts are negligible in a factorial design, their expressions can be used to deduce the missing results. In this article we propose a method for using this procedure when, as in the case of fractional designs, it is not known which contrasts will be null. The method is based on first establishing an interval of possible values corresponding to each of the missing results, then identifying which contrasts are always null independently of the value of said results.