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Q: In a experiment only one variable is changed at a time while all the other variables are kept unchanged?
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What is a experiment where only one variable is changed at a time while other variables are kept unchanged?

It's called a controlled experiment.


What is the word for the one variable that is purposely changed to test a hypothesis?

The independent variable is the one that is changed by the scientist.Control variables are kept unchanged in an experiment.Dependant variables are those that change as a result of the independent variable being changed.


Can you change an independent variable?

Yes, independant variables are the variables that are changed in an experiment to observe the results, called the dependant variable.


In an experimental investigation the variable that the researcher changes or manipulates in order to see its effects is called the?

Independent variable, is variable that the experimenter manipulates


The difference between the independent and dependent variables?

Independent variables are variables that can be changed in an experiment, while dependent variables are variables that change as a result of an experiment. In other words, independent variables are what you change, and dependent variables are the results of the experiment.


How many variables can be changed in an experiment?

It depends on the experiment or the category. you welcome s.a No it's the variable k.a.


Dependent and independent variables and control?

The control is the variable that stays the same.The independent variable is the thing(s) that is being changed in the experiment.(don't have too many independent variables o your experiment will not work correctly).The dependant variable is the variable that depends the on the independent variable for the experiment.


What is a varriables?

an independent variable is a term in science and it is not affected by other variables and can be changed in an experiment.


What is variables in science?

Science Answer: The Dependent Variable is the Variable that changes automatically during the experiment when the Independent Variable is changed by somebody. :D


How can an experiment that disproves hypothesis be useful?

by the variables. The variables are manipulated and responding. the manipulated ones are the one that is changed in the experiment. the responding variable is the one who is expected to change.


How can AN EXPERIMENT that disproves a hypothesis be used?

by the variables. The variables are manipulated and responding. the manipulated ones are the one that is changed in the experiment. the responding variable is the one who is expected to change.


What is a controlled variable in an experiment?

controlled variable is the factor that leaved unchanged to investigate any only one factor that has been changed in the other experiment and the effect of not altering this factor.