In: Statistics and Probability
A nutritionist wants to know if there is a difference in blood pressure if a person follows a Mediterranean diet. The nutritionist obtains participants’ blood pressure before and after the diet program. What would be the most appropriate statistical test to determine whether there is a significant reduction in blood pressure?
Median test or sign test is appropriate for this situation.
For this problem assume X be the blood pressure before diet program and Y be the blood pressure after diet program.