Free from outside control means Independent . While dependent Is opposite.
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The independent variable is changed by the scientist which then changes the dependent variable. The dependent variable relies on the independent variable.
Independent variables are ones that are not impacted by outside forces or other factors. Dependent variables are the ones that are impacted by other elements and need other elements in order to function.
Independent . . . what substance the 7th grader drinks Depoendent . . . his pulse rate
The two types of variables are: independent variables and dependent variables.Independent variables are variables (ideally only one or very few per experiment) that the experimenter manipulates in the experiment. For example, if you were testing the effect of temperature on plant growth rates, you would likely have similar plants in similar conditions but in areas with different temperatures. The experimenter is changing the temperature between the groups of plants, so the temperature would be the independent variable.The dependent variables are the effects the independent variable has on the experimental subjects. They are changes not being directly controlled or manipulated by the experimenter. In the above temperature vs. plant growth example, the rate of plant growth would be the dependent variable; it depends on the temperature.
An independent variable is what you change during an experiment, and a dependent variable is what gets changed. for example, if you are monitoring temperature vs size of plants. Everyday you change the temperature, and then record the size of the plants. Therefore, the temperature is the ind. variable and the size of the plants is the dep. variable.
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