An article in Industrial and Engineering Chemistry (More on Planning Experiments to Increase Research Efficiency, 1970, pp.

An article in Industrial and Engineering Chemistry (€œMore on Planning Experiments to Increase Research Efficiency,€ 1970, pp. 60€“65) uses a 25ˆ’2 design to investigate the effect of A = condensation temperature, B = amount of material 1, C = solvent volume, D = condensation time, and E = amount of material 2, on yield. The results obtained are as follows:

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に23.2 ab = 15.5 ad= 16.9 bc= 16.2 cd= 23.8 ace= 23.4 bde = 16.8 abcde= 18.1