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Which situation is an example of an observational study?

A. Having customers who bought a certain type of car answer questions about their satisfaction with the car
B. Measuring the weights of patients who come for a check-up in a hospital
C. Testing the effectiveness of a new reading program by allowing a classroom to use it and comparing the results with another classroom that doesn't use it
D. Asking voters about the candidate they prefer



Answer :

GinnyAnswer

Final answer:

Observational studies gather data without manipulating variables, as seen in different research scenarios presented.


Explanation:

An observational study involves gathering data without manipulating variables. For the given options:

  1. OA. Having customers answer questions about their satisfaction is an observational study.
  2. OB. Measuring patient weights is not an observational study.
  3. C. Testing a reading program is an observational study as it observes the impact without manipulation.
  4. OD. Asking voters about their preference is not an observational study.

Learn more about Observational Studies here:

https://brainly.com/question/37932836


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