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In an experiment your independent variable does change to what you choose. An example would be an experiment testing to see if the amount of water in a pot effects the amount of time it takes for the water to boil. Your independent variable would be the different amounts of water used. Your dependent variable would be the time because it depends on the independent variable (the amount of water used) . Your constant would be the temperature because it is not changed throughout the experiment, and thus remains constant. This way you can isolate which changes affect which variables.
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Definition of independent variable and dependat variable?
The independent variable is the variable which you change. It is not changed by any outside factors and so is independent of them.The dependent variable is the variable which is changed by the independent variable changing and which you measure. It is dependent on another variable.
What is the diffrence between dependent variable and independent variable?
the dependent variable changes with the independent variable. the independent variable only changes when changed by the experimenter. Time is usually an independent variable.
Factor that is changed it is a dependent variable or independent variable?
Its the independent one; because you change it, the dependent variable will be affected.
What is the difference between the independent variable and the experimental variable?
the independent variable is changed, and the experimental value measure. So you control the independent variable and change it to measure the results
What describes the variable that is changed to test the prediction?
The independent (or explanatory) variable is changed to test the prediction,
