Any well-defined group of people (or things)that researchers want to know something about is called a

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A population is the entire group of people or things that researchers want to study. A sample is a smaller subset of the population that researchers select to study. A focus group is a specific type of sample used in qualitative research, where a small group of people participate in a discussion about a topic. A variable is a characteristic or attribute that can take on different values or levels.

Any Well-Defined Group of People (Or Things)that Researchers Want to Know