An independent variable is something that you, as the experementer, change to try and get a set of results. E.g, in an electrical ciurcut you may change the voltage to see how it affects resistance. Voltage is the independent variable as your changing it, resistance is the dependant variable as it changes due to the change in the independent variable.
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Independent variable is the variable that you change in an experiment.
An independent variable is a variable that isn't affected by something else. A dependent variable is a variable that's affected by changes in the independent variable.
The independent variable is the thing that stays the same throughout the problem.
An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable.