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Originally, this method of writing the treatment combination was shown in the one of the most popular classic texts in DOE (Kempthorne 1952) (Table 5). However, with the invention of the great MS Excel, writing the treatment combination can be performed even more easily and flawlessly. The step by step process of writing the treatment combinations is described in the Video 5.
Video 5. Write Treatment Combinations Systematically and Flawlessly in Design and Analysis of Experiments DOE
Table 5 shows the step by step process of writing the treatment combinations.
Write the treatment combinations for the basic 22 design.
Add a column next to it and type c to add the factor C with it.
Now use the treatment combinations for the three variables A, B, and C to develop the treatment combinations for four variables A, B, C, and D.
And so on.
Table 5. Flowless system for writing the treatment combinations
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