When You Are Comparing the Averages on Two Variables for Significant

Multiple Choice

When you are comparing the averages on two variables for significant differences,which of the following is true?

A) The scales of measurement should be the same on both questions.
B) Since the same respondents answered both questions (variables) you do not have independent samples.
C) You have two independent questions and one group.
D) all of the above are true
E) none of the above are true