A Researcher Uses a Manipulated Independent Variable in Her Experiment

question 21

Multiple Choice

A researcher uses a manipulated independent variable in her experiment. This means she

• A) conducts her research in a laboratory.
• B) uses comparison groups.
• C) makes her prediction before conducting the study.
• D) randomly assigns participants to conditions.

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Definitions:

Pollution Abatement

Actions taken to reduce, control, or eliminate pollution from a given source.

Marginal Benefit

The enlarged happiness or benefit achieved from consuming an extra unit of a good or service.

Marginal Cost

The cost added by producing one additional unit of a product, emphasizing the variations in expenses as production scales.