Which of the Following Is Not an Important Source of Variability

question 22

Multiple Choice

Which of the following is not an important source of variability in data?

• A) Calculation errors.
• B) Differences between individuals.
• C) Instrument error.
• D) Measurement error.

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Definitions:

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.

Braking Speed

The rate at which a vehicle can decelerate and come to a complete stop, usually measured in meters per second squared (m/s²).

Internal Validity

Relates to the extent to which a study can establish a cause-and-effect relationship between its variables, free from external influence.