1) Arrange haphazardly 2) Arrange in random order 3) Disarrange 4) Randomise 1) Randomise 
Randomization. When referring to an experiment or clinical trial, the process by which animal or human subjects are assigned by chance to separate groups that compare different treatments or other interventions. Randomization gives each participant an equal chance of being assigned to any of the groups.
Randomization. When referring to an experiment or clinical trial, the process by which animal or human subjects are assigned by chance to separate groups that compare different treatments or other interventions. Randomization gives each participant an equal chance of being assigned to any of the groups.
Randomize: To use chance alone to assign or arrange. For example, the investigators may randomize the participants in a clinical trial to different groups in order to compare the outcomes of different treatments.
[v] - arrange in random order