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प्रश्न
When a researcher tests several groups of people at the same time each group at a different age, he is conducting a(n) ______ study.
विकल्प
Sequential
Cross-sectional
Longitudinal
Observational
MCQ
रिक्त स्थान भरें
उत्तर
When a researcher tests several groups of people at the same time each group at a different age, he is conducting a(n) cross-sectional study.
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Type of Groups
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