Which term refers to the set of all individuals of interest in a study?

Which term refers to the set of all individuals of interest in a study?

• A. Population
• B. Sample
• C. Parameter
• D. Statistic

Answer: (A)

Think about the group you want to learn about. The set of all individuals of interest in a study is called the population. The population is the entire target group you want to understand, whether it’s all adults in a city, all students in a school, or every item produced in a batch. Because studying every member is often impractical, researchers collect data from a subset called the sample. A parameter is a numerical feature that describes the population (like the true population mean), while a statistic is the corresponding numerical feature calculated from the sample (like the sample mean). So the term that refers to the whole group of interest is population.

Think about the group you want to learn about. The set of all individuals of interest in a study is called the population. The population is the entire target group you want to understand, whether it’s all adults in a city, all students in a school, or every item produced in a batch. Because studying every member is often impractical, researchers collect data from a subset called the sample. A parameter is a numerical feature that describes the population (like the true population mean), while a statistic is the corresponding numerical feature calculated from the sample (like the sample mean). So the term that refers to the whole group of interest is population.