According to the Text,there Are Three Types of External Sources

question 18

True/False

According to the text,there are three types of external sources: personal,marketing,and secondary.

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Definitions:

Economics

Economics is the social science that studies how individuals, governments, firms, and nations make choices on allocating scarce resources to satisfy their unlimited wants.

Experiments

Scientific procedures undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Natural Experiments

Observational study setups where the variables of interest change naturally, allowing researchers to study outcomes without direct manipulation.

Laboratory Experiments

Controlled testing environments where researchers manipulate variables to study effects in a lab setting.