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Q: Why do we only change one variable at time?
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Why is it imporatant to change systematically only one variable at a time when doing the experiment?

It is important to only change one variable at a time when doing an experiment, because if you change more than one, there will be uncertainty as to which one affected the result.


Why should an experiment be tested only one variable at a time?

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.


Why is advantageous for scientist to test only one variable at a time during an experiment?

If you change more than one variable at a time, you will not be able to tell which variable is responsible for what change. Scientists need to know exactly which variable caused the observed experimental results.It is advantageous for scientists to test only one variable at a time during an experiment because if you change all variables at once, you will not be able to tell which variable is responsible for the observed results.


Why is it advantageous for a scientist a test only one variable at a time during an experiment?

If you change more than one variable at a time, you will not be able to tell which variable is responsible for what change. Scientists need to know exactly which variable caused the observed experimental results.It is advantageous for scientists to test only one variable at a time during an experiment because if you change all variables at once, you will not be able to tell which variable is responsible for the observed results.


Why is it advantages for scientists to test only one variable at a time during a experiment?

If you change more than one variable at a time, you will not be able to tell which variable is responsible for what change. Scientists need to know exactly which variable caused the observed experimental results.It is advantageous for scientists to test only one variable at a time during an experiment because if you change all variables at once, you will not be able to tell which variable is responsible for the observed results.


Why is it advantage for scientists to test only one variable at a time during an experiment?

If you change more than one variable at a time, you will not be able to tell which variable is responsible for what change. Scientists need to know exactly which variable caused the observed experimental results.It is advantageous for scientists to test only one variable at a time during an experiment because if you change all variables at once, you will not be able to tell which variable is responsible for the observed results.


Why is it important to only test one variable in an experiment?

Because if you change more than one variable at a time, you can't tell which is affecting the results.


How many variables do you change at one time during an experiment?

You only change one variable; if you changed multiple variables you wouldn't know which one caused a change.


Why is only variable changed in an investigation?

You only change one variable in an investigation because if you change more than one you won't know which change affected the data.


What are factors that can change an experiment in which only one variable is manipulated at a time?

um varible i think now


What happens when more than one variable in an experiment is changed at a time?

Because you want to see how the experimental results change due to only that one variable change. If you used two variables, and the results varied, how would you know which variable contributed more to the change if at all? It can be done this way, but one variable at a time will allow you to make sense of your data much more efficiently.


Why does an investigator change only one variable in an experiment?

So the variable can be at constant.