Study Design

Question 1

What is the difference between an experiment and observational study? How does this affect conclusions?

Answer 1

In an experimement variables are assigned treatments and we can create a cause and effect relationship. In a observational study we are simply observing we cannot establish relationships.

Question 2

What determines whether we can make generalizations about our conclusions?

Answer 2

-Sample should be representative to the population
-Random sampling
-Large sample size