Question
A control group is ____ in all experiments.
1)necessary
2)optional
3) variable
4)experimental
1)necessary
2)optional
3) variable
4)experimental
Answers
GPT-4o mini
A control group is **1) necessary** in all experiments.
Control groups are used to establish a baseline against which the effects of the experimental treatment can be compared, making them essential for accurate analysis in scientific research.
Control groups are used to establish a baseline against which the effects of the experimental treatment can be compared, making them essential for accurate analysis in scientific research.