Indicate Whether the Study Described Is an Observational Study or a Controlled

question 56

Multiple Choice

Indicate whether the study described is an observational study or a controlled experiment.
-A group of students is divided into two groups. One group listens to classical music while taking a math test and the other group takes the test in silence. The average test scores of the two groups are compared to see whether listening to music during a math test has an effect on scores.

• A) Controlled experiment
• B) Observational study

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