weather something needs something els to work would be dependent and alone for independent
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An independent variable is a variable which, in the context of the experiment or the observations, can affect the dependent variable but is not affected by it. By contrast, the dependent variable is affected by changes in the independent variable. It is quite possible that there is no independent variable, as such, and each variable affects the other.
independent
the dependent variable has one value and the independent variable has no value
Any form of numerical measurement can be a dependent variable (or an independent one).
The dependent variable has an inverse linear relationship with the dependent variable. When the dependent increases, the independent decreases, and conversely.