In a correlational study
a. 1 variable is measured and 2 groups are compared
b. 2 variables are measured and 2 groups are compared
c. 1 variable is measured and there is only 1 group of participants
d. 2 variables are measured and there is only 1 group of participants
2 answers
http://psychology.about.com/od/researchmethods/a/correlational.h
Thank you both for helping with this. I'm so glad that you all are here.