experimental factors

What Factor Is Changed Or Being Tested In A Control Experiment?

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What Factor Is Changed Or Being Tested In A Control Experiment? The factors in an experiment that can be changed are called variables. Some example of variables would be: changing the temperature, the amount of light present, time, concentration of solutions used. 2. A controlled experiment works with one variable at a time. What is

How Many Experimental Groups Should You Have?

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How Many Experimental Groups Should You Have? There must be at least two groups in any valid experiment: the experimental and the control group. In this example, your experimental group is the bag of popcorn you placed in the refrigerator. An experimental group is the group that receives the variable being tested in an experiment.