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

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15y ago

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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.


What variable is the only variable that is purposely changed to test the hypothesis?

This variable is chosen by the research team according to the experiment project.


What variable is the only one that purposely changed to test a hypothesis in an experiment?

Independent variable : )


What is the test variable (independent variable) in the experiment?

The independent variable.


What is the test (independent) variable in an experiment?

The independent variable.


What is an experiment in which only one variable changes?

An experiment in which only one variable changes is called an "controlled experiment" or "single-variable experiment." In this type of experiment, the researcher manipulates one variable (independent variable) while keeping all other variables constant to determine its effect on the outcome (dependent variable). This approach helps to isolate the impact of that single variable on the results.


An experiment that test only one factor at a time by using a comparison of a control group with an experimental group?

A variable test?


When a experiment only has one variable that can change and all other variables are kept unchanged this type of experiment is an?

it is a fair test


What dose controlled experiment mean?

this is an experiment that only one varible is manipulated at a time


Why is only one variable tested at a time in an experiment?

It would not be a fair test if there were 2 or 3


What is a mainpulated variable?

The one variable in an experiment that is changed to test a hypothesis.


What is the one variable A change in an experiment to test a hypothesis?

Manipulated variable