Five different groups of chronically ill patients were studied to assess their satisfaction regarding their quality of life. Group #1 was COPD patients, Group #2 were CHF patients, Group #3 were Diabetics, Group #4 had HIV, Group #5 were dialysis patients. Data were collected with an instrument that required the study participants to rate their quality of life on a 4-point Likert scale with responses that ranged from 'very dissatisfied' to 'very satisfied.' The data were then compared to see if the groups differed. What test do you think would be best to analyze these data?

A. Repeated measure ANOVA

B. Person r

C. Chi Square

D. ANOVA

E. Mann Whitney U test

F. Paired t test

G. Independent ttest

H. Kruskal Wallis

I. Friedman test

J. Wilcoxon

K. Phi