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Researchers want to determine whether a new math curriculum improves test scores compared to the old curriculum. They randomly assign 15 classrooms to the new curriculum and 15 to the old one. The unit of analysis (experimental unit) here is:
Researchers want to determine whether a new math curriculum improves test scores compared to the old curriculum. They randomly assign 15 classrooms to the new curriculum and 15 to the old one. The unit of analysis (experimental unit) here is: