Are the results of fit two-level screening valid with a Plackett-Burman which may violate effect sparcity?
I wanted to design an experiment to screen 18 factors against one response. I now understand that there are more modern, better designs to solve this problem, but at the time I used a 20-run Plackett-Burman design. I completed each run in duplicate, for 40 runs in total. I am attaching a .csv of the anonymised results, where I have standardised the factor levels (subtracted mean and divided by sta...