randomization

noun

ran·​dom·​i·​za·​tion ˌran-də-mə-ˈzā-shən 

plural -s

1

: controlled distribution usually of given tests, factors, samplings, treatments, or units so as to simulate a random or chance distribution and yield unbiased data from which a generalized conclusion can be drawn

2

: a random process used in a statistical experiment to reduce or eliminate interference by variables other than those being studied

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