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As many as you need. You can't change more than one if you want accurate results.

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13y ago

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Related Questions

A controlled experiment allows the scientist to isolate and test what?

to isolate and test single variables


How do the test variables and outcome variables in an experiment compare?

Test variables are the factors that are intentionally changed or manipulated by the researcher in an experiment, whereas outcome variables are the factors that are measured and affected by the test variables. Test variables are the independent variables that are controlled by the researcher, while outcome variables are the dependent variables that change in response to the test variables. The relationship between the test variables and outcome variables is explored to determine the effect of the test variables on the outcome variables.


How many variables can you test in an experiment?

one


What type of experiment is it when one variable is changed while the other variables are controlled?

its called a fair test. :)


A controlled experiment allows the scientist to isolate and test?

A controlled experiment allows the scientist to isolate and test a specific variable by keeping all other variables constant. This helps to determine the direct impact of the variable being tested on the outcome of the experiment. Controlled experiments are essential for establishing cause-and-effect relationships in scientific research.


Is controlling variables a controlled experiment?

an experiment to test a scientific hypothesis in which the variable component is controlled, not random, eg In an experiment that measures volume vs time to boiling, the volume, being the indirect variable, is measured.


When a scientific experiment is carried out in a controlled setting all variables are kept the same except for the variable.?

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 ------------- variable?

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 what variable?

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.


A test of the effect of a single variable by changing it while keeping all other variables the same?

controlled experiment


Does a controlled experiment have all variables held constant?

all but 1...the 1 yu want tu test.


What is a cotrolled experiment?

It means that except for the independent variable (the only factor that you change) you remain the other variables constant. To keep the control variables the same. Then this is a controlled experiment (fair test). Hope this helps :)