Random sample
A test group that is selected solely by chance.
Read Also:
- Randomization
A method based on chance alone by which study participants are assigned to a treatment group. Randomization minimizes the differences among groups by equally distributing people with particular characteristics among all the trial arms. The researchers do not know which treatment is better. From what is known at the time, any one of the treatments […]
- 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.
- Randomized
The use of chance alone to assign the participants in an experiment or trial to different groups in order to fairly compare the outcomes with different treatments. Randomization is an important feature of experimental design.
- Randomized clinical trial
Randomized controlled trial.
- Randomized controlled trial
(RCT) A study in which people are allocated at random (by chance alone) to receive one of several clinical interventions. One of these interventions is the standard of comparison or control. The control may be a standard practice, a placebo (“sugar pill”), or no intervention at all. Someone who takes part in a randomized controlled […]