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Some Researchers Want to Compare 60-Year-Olds to 80-Year-Olds,but They Worry

Question 130

Multiple Choice

Some researchers want to compare 60-year-olds to 80-year-olds,but they worry about finding similar groups of people.Which design would be best for minimizing that problem?​


A) Cross-sectional
B) ​Longitudinal
C) ​Single-blind
D) ​Double-blind

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