It is important to recognize paried data when you have it. Remember two-sample t-methods are not valid unless the groups are independent and A. paired group are NOT independent B. paired groups MAY or MAY NOT be independent C. paired groups usually ARE independent D. paired groups are ALWAYs independent
Expert Answer
A. Paired groups are not independent
2-sample t-methods aren’t valid unless the groups are independent and paired groups are not independent