Question

What is the most important difference between an experiment and an observational study?

Answer 1

Answer:

The most important difference is that in experiment the objects on which the procedure is carried out on or with can be determined/controlled

while in observational study you can't determine that because you only observe a result been produced by an experiment

Step-by-step explanation:

An experiment is a procedure undertaken by a person or a group of persons to make a discovery , refute or validate a hypothesis, or to prove an existing fact on ground already. experiments are carried out by manipulating a factor involved in the hypothesis, discovery or known fact to get an outcome.

while an observational study is the observation of the effect of a test been carried out like environmental test, diagnostics test and even a kind of treatment of any kind without controlling the subjects who feel the effect or control how they are exposed to it.

Answer 2

Answer and Explanation;

• The most important difference between an experiment and an observational study is the fact that; .In an observational study the researcher has no control over the variables while an experiment involves application of treatments to a group and recording the effects.
• In an observational study researchers observe subjects and measure variables of interest without assigning treatments to the subjects. The treatment that each subject receives is determined beyond the control of the investigator.
• In an experiment investigators apply treatments to experimental units (people, animals, plots of land, etc.) and then proceed to observe the effect of the treatments on the experimental units