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To test a single variable, scientists will change only that one variable (called the independent variable) whilst keeping everything else that could possibly affect the results of the experiment exactly the same. The other variables that are affected by the independent variable changing (called dependent variables) are then measured, and a conclusion can be made.
Ardella Ernser
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How many variables can be tested at a time?
An experiment should test only one variable (the independent variable) at a time. If you are testing more than one variable at a time, you have no idea which variable is causing which effect.
How many variables should an experiment test at a time?
Only one, because if you do two or more, you won't know which one caused a change,
What is the one variable that is changed to test a hypothesis is?
The one variable that is purposely changed to test a hypothesis is manipulated variable
What is a scientist that carries out series of test that are identical in every respect for one factor which is the manipulated variabe?
In a(n) MULTI VARIABLE, a scientist carries out a series of tests that are identical in every respect except for one factor , which is the munipulated variable. I got this example from my WKST at Pearson Successnet.com
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.
What is test variable mean in science?
the test variable is the independent variable.
The one factor that a scientist changes during an experiment also called independent variable?
Yes, the one factor that a scientist changes during an experiment is also called an independent variable.
What does a scientist change in his experiment?
One variable at a time.
What does a scientist change in a experiment?
One variable at a time.
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.
What are the factors that can change in an experiment called?
Environmental factors if you cannot control them.Variable factors if you can control them.See link below for easy explanation:In an experiment the scientist is able to change the independent variable. To insure a fair test, a good experiment has only one independent variable. As the scientist changes the independent variable, he or she observes what happens. - See more at: http://www.chacha.com/question/what-part-of-an-experiment-is-the-factor-that-you-change#sthash.iyH25Jac.dpufIn an experiment the scientist is able to change the independent variable. To insure a fair test, a good experiment has only one independent variable. As the scientist changes the independent variable, he or she observes what happens. - See more at: http://www.chacha.com/question/what-part-of-an-experiment-is-the-factor-that-you-change#sthash.iyH25Jac.dpuf
Why is it important to test only one variable at a time during a experiment?
If you test only one variable then you know that the difference in the experimental and control setup is that one independent variable. If you test more than one you will not know which one made the difference.
