2^{k−p} fractional factorial. Generators like ['ABD', 'ACE'] define column D = A·B, E = A·C (letters map to factor indices in order). Resolution is inferred from the shortest word.
['ABD', 'ACE']
2^{k−p} fractional factorial. Generators like
['ABD', 'ACE']define column D = A·B, E = A·C (letters map to factor indices in order). Resolution is inferred from the shortest word.