Concept
Version 7
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What are Observational Studies?
![Observational Studies](../../../../../../../../../figures.boundless-cdn.com/17699/full/observation-and-study-hall.jpeg)
Observational Studies
Nature Observation and Study Hall in The Natural and Cultural Gardens, The Expo Memorial Park, Suita city, Osaka, Japan. Observational studies are a type of experiments in which the variables are outside the control of the investigator.
Source
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"Nature Observation and Study Hall."
http://commons.wikimedia.org/wiki/File:Nature_Observation_and_Study_Hall.JPG
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