Examlex
Vehicles are generally recognized as a major source of mercury pollution.
Independent Variable
In research, the variable that is manipulated or changed to observe its effect on a dependent variable.
Dependent Variable
In an experiment or study, the variable that is being tested and measured, often to see the impact of variations in the independent variable.
Randomization
In an experiment involves assigning each individual by chance processes.
Control Group
In experimental research, a group of subjects that does not receive the treatment being tested, used for comparison against the group that does.
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