No, there can be several outputs that are dependent variables. For example, you will have a number of grades in different subjects when you finish school. So the experiment (your schooling) will result in a number of dependent variables. Similarly, the school's outcome for its "experiment" of teaching a number of pupils will be several sets exam grades: a different dependent variable for each subject.
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An independent variable is the one that you change in the experiment. A dependent variable is the one that you measure, it changes depending on the independent variable.
An independent variable is when you do not control what happens In an experiment,however; a dependent variable is when you actually control the experiment,
The independent variable is the one that you change in an experiment. The dependent variable changes because of the independent variable. You control the independent and observe the dependent.
If changes in one variable do not affect the outcome of another variable, then the second variable is independent. A variable that is not independent is dependent.
The independent variable is the variable being manipulated in the experiment in order to show the effect on the dependent variable. It is also called the experimental variable.The dependent variable is the variable being observed in the experiment. Changes in the dependent variable as a result of changes in the independent variable are observed, which is the purpose of the experiment. Dependent variable is also called the response variable.