we don't have control over everything
the parts that you control
without a hypothesis there is no experiment
An experimental group is the group in an experiment that receives some type of treatment. The control group in an experiment receives no treatment. And, in conclusion, sometimes it might not work so be careful!!! :)
a variable
Which group in am controlled experiment is not exposed to the experimental variable
the reason it is important to controll the variables in an experiment is because if the variables are not controlled in an experiment it will be impossible to reproduce the experiment. which also will make it impossible to prove the theory being tested
The hypothesis states what question you are studying. If there is no hypothesis, one wouldn't know what one is studying, so it's impossible to construct a controlled experiment.
controlled experiment
controlled experiment and observations..i might be wrong
experiment
sometimes it is because you might not know what is going to happen.
you might not get the experiment correct (:
Scientist use models
Scientist use models
the answer is a experiment that is controlled
Variables
It is called a controlled experiment.