Variables

Variables

Scientific experiments are performed to determine the relationship between two or more variables.
An independent variable is a variable that is manually changed. An experiment should have only one independent variable.
A dependent variable is a variable that will change as a result of a change in the independent variable.
The dependent and independent variables are measured to determine the relationship between them.
A control variable is a variable that must be kept the same throughout the experiment to make the test fair.
Changing a control variable will make it unclear if that change or a change in the independent variable is responsible for a change in the dependent variable.

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