11 (4 points) A study follows two groups of students, who are randomly selected

Question

11 (4 points) A study follows two groups of students, who are randomly selected from a school, for one year. Students decide which group to join depending on which category they feel they belong to: I watch more than 10 hours of TV per week OR I watch fewer than 5 hours of TV per week. Students who watch no television, or who watch between 5 and 10 hours a week, were excluded from participating in the study. The study records the average grades and the percent of students who participate in team sports. is this an observational study or an experiment? Explain.

Explanation / Answer

This is an observational study.

An observational study is simply by using a set of natural condition or observations without a hypothesis or variable. An experimental study uses a hypothesis and variable.

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