Tham khảo tài liệu 'engineering statistics handbook episode 6 part 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . Summary tables of useful fractional factorial designs ENGINEERING STATISTICS HANDBOOK hW tools raids lỉEÂtCH BACK Nixf 5. Process Improvement . Choosing an experimental design . How do you select an experimental design . Fractional factorial designs . Summary tables of useful fractional factorial designs Useful fractional factorial designs for up to 10 factors are summarized here Generator column notation can use either numbers or letters for the factor columns There are very useful summaries of two-level fractional factorial designs for up to 11 factors originally published in the book Statistics for Experimenters by . Box . Hunter and . Hunter New York John Wiley Sons 1978 . and also given in the book Design and Analysis of Experiments 5th edition by Douglas C. Montgomery New York John Wiley Sons 2000 . They differ in the notation for the design generators. Box Hunter and Hunter use numbers as we did in our earlier discussion and Montgomery uses capital letters according to the following scheme 123456789 10 11 ABCDEFGHJK L Notice the absence of the letter I. This is usually reserved for the intercept column that is identically 1. As an example of the letter notation note that the design generator 6 12345 is equivalent to F ABCDE . http div898 handbook pri section3 1 of 3 5 1 2006 10 30 37 AM . Summary tables of useful fractional factorial designs Details of TABLE catalogs these useful fractional factorial designs using the the design notation previously described in FIGURE . generators the defining Clicking on the 2 specification for a given design provides details relation the courtesy of Dataplot files of the design generators the defining confoundmg relation the confounding structure as far as main effects and two-level structure interactions are concerned and the design matrix. The notation used and the follows our previous labeling of factors with numbers not letters.
