I would like to compare the means of Group A with those of Group B. How would I see if there is any statistical significance between the two groups? I tried: mvmvtest means group_a*, equals(group_b_vector), but this isn't quite what I am looking for as this formula compares group_a_1 to only group_b_1 and group_a_2 to only group_b_2, (ie it does not compare all values of Group A to every value of Group B). Is there a way to achieve the results I am looking for?