What is unique about the experimental design of an observational study?

2 answers:

3 0

The correct answer will stress the differences between the observational study and experimental study - and options a), c) and d) can be true of both.

The correct answer is:
b. Experimental subjects are left free of manipulation
-this is the major difference between the observation and experiment.

alina1380 [7]3 years ago

3 0

For APEX, the answer is b "Experimental subjects are left free of manipulation."

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