Examlex
Which of the following organisms is not normally found on the skin?
Direct Control
The management or regulation of variables in an experiment to ensure that any observed effects are due to the manipulation of the independent variable.
Extraneous Variables
Variables that are not the focus of a study but could influence the results, potentially leading to confounding effects if not controlled.
Randomization
The process of randomly assigning subjects to different groups in a study, minimizing biases and ensuring variability.
Dependent Variable
The outcome factor that researchers measure in an experiment to see if it changes in response to manipulations of the independent variable.
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