One-way Anova using the iv and dv from the DESGROUP data set. Make sure you click on options and then click on the various descriptive statistics (e.g., mean, standard deviation, etc). Otherwise you will not get this information when you run your analysis.
Once you have completed your ANOVA you must then conduct a post-hoc analysis to determine which group (1, 2, or 3) differs from the other. Use a tukey HSD test for the analysis.
Next is the creative part. You must now label what the iv could be in real life. What I mean is, based on your outcome, what might be the independent variable (remember 3 levels) and what is the dependent variable (remember, this must be a continuous variable)?