做對比實驗的時候, 如果需要實驗XX特性的時候需要進行隨機實驗, 此時分爲如下兩個組.
treatment group: 表示帶有XX特性的實驗.
control group: 表示沒有帶有XX特性的實驗.
XX特性可能很多是需要測試的特性, 外部選擇是否加上XX特性
http://www.ncsu.edu/labwrite/il/controltreatmentgr.htm
Control and Treatment Groups:
A control group is used as a baseline measure. The control group is identical to all other items or subjects that you are examining with the exception that it does not receive the treatment or the experimental manipulation that the treatment group receives. For example, when examining test tubes for catalytic reactions of enzymes when added to a specific substrate, the control test tube would be identical to all other test tubes with the exception of lacking the enzyme. The treatment group is the item or subject that is manipulated. In our example, all other test tubes containing enzyme would be part of the treatment group.