randomize
verb (used with object)
to order or select in a random manner, as in a sample or experiment, especially in order to reduce bias and interference caused by irrelevant variables; make random.
Used to describe actions that started in the past and continue into or have direct relevance to the present.
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Such “natural experiments,” in which some event or factor has randomized participants into experimental and control groups, have been especially hard to find during the pandemic.
From New York Times ● Oct. 20, 2020