Question

Which statement is true about observational studies? (2 points)
Responses

They manipulate variables to compare outcomes
They manipulate variables to compare outcomes

They allow for conclusions about cause and effect
They allow for conclusions about cause and effect

They identify relationships but cannot determine cause
They identify relationships but cannot determine cause

They can be used when experiments may not be ethical

Answer 1

The true statements about observational studies are:

1. **They identify relationships but cannot determine cause.**
2. **They can be used when experiments may not be ethical.**

Observational studies observe subjects without manipulating variables, making it difficult to establish causal relationships. They are often employed in situations where experimental manipulation would be unethical or impractical.