random assignment
Chance-based group placement
Random assignment is a research method where participants are allocated to different groups by chance alone, ensuring each person has an equal probability of ending up in any condition.
This eliminates selection bias and helps establish that differences between groups result from the treatment rather than preexisting characteristics.
Participants were divided into treatment and control groups through random assignment.
The technique is fundamental to experimental design and clinical trials.
- flip a coinRandom two-option selector
- control groupUntreated subjects for comparison
- experimentSystematic investigation procedure
- placeboInactive therapeutic substitute
- blind studyTrial concealing group assignments
lottery · chance · allocation · subjects · informed consent · participants · clinical trial · human subjects · variable · bias · sampling · sample size · probability · level playing field · treatment group · methodology · double-blind · coin flip
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