It would not be a fair test if there were 2 or 3
Controlled Experiment :]
An experiment in which only one variable, the manipulated variable, is changed at a time is called a controlled experiment. This approach allows researchers to isolate the effects of the manipulated variable on the dependent variable, ensuring that any observed changes can be attributed directly to the variable being tested. By keeping all other variables constant, the reliability and validity of the results are enhanced.
A controlled experiment. In a controlled experiment, one variable (independent variable) is changed or manipulated while all other variables are kept constant to observe the effect on the dependent variable. This allows researchers to determine the specific impact of the variable being tested.
Controlled Experiment :Pcontrolled experiment.
a controlled experiment
Which variable is being tested in this experiment
A controlled experiment is when a researcher manipulates and controls all variables except for the one being tested, known as the independent variable. This helps to isolate and determine the specific effects of the independent variable on the dependent variable.
The term for an experiment in which only one variable is changed at a time is called a controlled experiment. This allows researchers to isolate the effect of that specific variable on the outcome of the experiment.
if you change more than one variable, you will not know which one has had an effect on the experiment. If the outcome changes when one variable is altered, then the change can only be due to the one variable, by logical deduction.
Controlled experiment
Controlled Experiment :Pcontrolled experiment.
A controlled experiment is when only one variable, the manipulated variable, is changed at a time to observe its effect on the dependent variable, while keeping all other variables constant. This approach helps to determine the specific impact of the manipulated variable on the outcome of the experiment.