Scientists use _____________________ to analyze the data they gather from their studies.

In the _________________ method of research, researchers select a group of participants and then observe them over a period of time.

The ______________________ method of research involves observing a sample of individuals of different ages.

____________________ observation involves observing people in their normal lives, such as at home or at school.

______________________ observation takes place in a specific area set aside for observation and research.

What is a factor in an experiment that researchers manipulate?

What is a factor in an experiment that depends on the independent variable?

Who are the people who receive the treatment in an experiment?

Who are the people in an experiment who do not receive treatment?

What is the substance or treatment that has no effect apart from a person's belief in it researchers manipulate?

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