Select the correct answer.

In which type of statistical study is the population influenced by researchers?

A. observational study
B. Researchers do not influence the population in any of the statistical studies.
C. experiment
D. survey



Answer :

Final answer:

Observational studies involve data collection without researcher manipulation.


Explanation:

Observational studies involve gathering data without researcher manipulation, making them nonexperimental. Researchers in observational studies do not influence the population being observed. For example, in a survey or observational study on voter preferences, the researchers do not alter the variables of interest but simply observe and collect data.


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