Hello,
I am writing a couple articles for a chemistry journal on the Design and Analysis of Experiments. As we all know, these methods test different combinations of factors and levels. Meaning, we change multiple things, simultaneously.
However, when you use your favorite web searching tool, and look for, "Designing a scientific experiment" or some other related searches, you'll find a lot of links that claim, "You CANNOT change more than one thing at a time during an experiment." Sometimes that is followed up with, "Statistics does NOT allow this." Others will say, "Because, you can't tell what made the change in the response."
We all know this is non-sense. But, it is ingrained in scientific lore. Especially at the academic level. Where most of the journal article reviewers reside.
I bring this up because I have written articles for other journals in the past where I used Plackett-Burman designs and Box-Behnken Designs. These articles were rejected by the reviewers for the reasons stated above. Sadly, in these articles, the first 8-15 references were stats textbooks. When I pointed this out to the reviewers. It angered them. Of the dozen or so reviewers I've dealt with, a pair of reviewers, one said something like, "This so called statistician should know that you can't change more than one thing at a time during the experiment." The other said something like, "Why does this author bore me with the basics of designed experiments. Everyone already knows this."
When I was an undergrad in Physics and Biochemistry and a graduate student in Chemistry, all the articles we read used t-tests or multiple t-tests to compare groups, "control" vs "experimental group N". We used simple linear regression to find a relation between X and Y. In some articles, there was X1 to Xn and Y. The authors chose to use multiple, Simple Linear Regressions. Meaning X1 vs Y, X2 vs Y, Xn vs Y, etc.
So, how do you handle a rejection based upon the editor's or the reviewer's lack of statistical knowledge?
How do you battle against bad statistics in science journal articles?
Thanks,
Drew
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Andrew Ekstrom
Statistician, Chemist, HPC Abuser;-)
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