The variable you can't control is presumably the one you want to know.
If you know one variable, it could be anything, weight, temperature, mass etc, and you know the result in the experiment, you can work out the missing variable and therefore the result of your experiment.
control group
All variables except one, the experimental variable, are kept constant in an experiment.
In a controlled investigation, keeping all variables consistent except for one ensures that any observed changes in the outcome can be attributed solely to the manipulation of that single variable. This helps to establish a clear cause-and-effect relationship, minimizing the influence of confounding factors. By controlling other variables, researchers can enhance the reliability and validity of the results, allowing for more accurate conclusions.
Controlling all variables except one is crucial for establishing clear cause-and-effect relationships because it minimizes confounding factors that could skew the results. By isolating the independent variable, researchers can confidently attribute any observed changes in the dependent variable directly to that specific factor. This enhances the validity of the findings and allows for more reliable conclusions to be drawn. Ultimately, it ensures that the experiment accurately tests the hypothesis in question.
The general term is 'controlled experiment'.
control group
Ideally you control all variables except for the variable of interest.
When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the control variable. The control variable is something that is constant and unchanged in an experiment, and is held constant to test the relative impact of independent variables.
When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the control variable. The control variable is something that is constant and unchanged in an experiment, and is held constant to test the relative impact of independent variables.
When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the control variable. The control variable is something that is constant and unchanged in an experiment, and is held constant to test the relative impact of independent variables.
When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the control variable. The control variable is something that is constant and unchanged in an experiment, and is held constant to test the relative impact of independent variables.
control group
it is difficult to control all variables except the one being tested
it is difficult to control all variables except the one being tested
it is difficult to control all variables except the one being tested
The variable you can't control is presumably the one you want to know. If you know one variable, it could be anything, weight, temperature, mass etc, and you know the result in the experiment, you can work out the missing variable and therefore the result of your experiment.
It is so that the experiment is a fair test. In order to protect the integrity and / or accuracy of the experiment and its results, you have to be able to control all the variables so that you know exactly why something is happening. If you do not control the variables, then one of them could be the reason for the results, and you won't be sure why you got the results you did.