Question

Different types of variables affect the results of an experiment. Which of the following statements best describes an outcome variable (dependent variable)?
A.An outcome variable (dependent variable) is always affected by the manipulation of a test variable (independent variable).
B.An outcome variable (dependent variable) is part of the control group in an experiment because it does not change.
C.An outcome variable (dependent variable) is intentionally held constant throughout an experiment.
D.An outcome variable (dependent variable) is a variable that might be affected by the manipulation of a test variable (independent variable).

Answer 1

There are three main variables: independent variable, dependent variable and controlled variables. Variables such as temperature, humidity, pressure, gravity, elevation, vibration, stress, strain, lighting, etc. can impact the measurement result. Some tests and calibrations are more sensitive to certain environmental factors than others.

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