A researcher wants to find out if people have preferences in taste of three kinds of peanut butter (Brand A, Brand B, and Brand C). Eight participants are each asked to taste the three brands of peanut butter in random order. The participants are asked to rate the taste of each peanut butter on a 20-point scale (without knowing which brand is which). A high score is a more positive rating. Conduct the Friedman's Rank Test for kcorrelated samples (²_F) using an alpha of .05. Also, conduct a post hoc analysis using the Wilcoxon's Matched-Pairs Signed-Ranks Test.

What is the independent variable?

What is the dependent variable?