Randomization is a procedure that eliminates the effects of extraneous factors during an experiment, even prior to the administration of treatments, by creating blocks of experimental units so that all units within any one block are as alike as possible with respect to these factors.

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Randomization is a procedure used to ensure that each experimental unit has an equal chance of receiving any treatment, thereby reducing bias and ensuring that differences between treatment groups are due to the treatment itself rather than extraneous factors. Blocking is a separate technique that groups experimental units that are similar with respect to some known factor that is expected to affect the response variable, to further reduce variability.

Randomization Is a Procedure That Eliminates the Effects of Extraneous