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Case Study

Based on the historical context of the 19301930s, explain why the initiation of nationwide surveys by the United States government necessitated crucial advancements in sampling techniques.

Case context: A group of historians is examining a major shift in research methodology during the 19301930s. They note that the United States government began implementing large-scale nationwide surveys to assess social and economic conditions, rather than just focusing on local or regional social issues. The historians observe that this shift in scale required an entirely new approach to selecting research participants.

Question: Based on the historical context of the 19301930s, explain why the initiation of nationwide surveys by the United States government necessitated crucial advancements in sampling techniques.

Sample answer: The initiation of nationwide surveys meant that researchers could not possibly collect data from every single individual in the country. Therefore, crucial advancements in sampling techniques were necessary in order to draw accurate inferences and reliable conclusions about the entire population based on the data collected from a representative subset.

Key points:

  • Nationwide surveys required assessing massive populations.
  • Crucial advancements in sampling techniques were needed.
  • Advanced sampling allowed researchers to draw accurate inferences about the entire population.

Rubric: Full credit requires explaining that the nationwide scale of the surveys meant researchers needed a rigorous way to draw accurate inferences about the entire population.

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Updated 2026-05-27

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Research Methods in Psychology - 4th American Edition @ KPU

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