Question

select the correct answer.

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

observational study
experiment
researchers do not influence the population in any of the statistical studies.
survey

Explanation:

Define the types of statistical studies

• An observational study measures characteristics of a sample without attempting to manipulate or influence the subjects.
• A survey gathers data by asking questions without imposing any treatments or changes on the population.
• An experiment deliberately applies a treatment or intervention to the subjects to observe and measure its effects, thereby directly influencing the population.

Identify the study where researchers influence the population

• Since researchers actively apply treatments or interventions in an experiment, this is the type of study where the population is influenced by researchers.

Answer:

• observational study
• experiment (Correct answer)
• Researchers do not influence the population in any of the statistical studies.
• survey