# Help for simple regression

my research question is: "Can we say that the number of hours of Internet use increases with Internet purchase?" with the variables: - Use of Internet per week (Use in hours) - If respondent has already made a purchase on the Internet (1 = yes, 2 = no)

Therefore, this statement told me that my dependant variable is number of hours of Internet use and my independant variable is Online purchase. But that seems me a little weird. How can I check if I don't have to reverse my IV and my DV ? (I use SPSS) Thank you

• Independent and dependent variables are determined a priori based on the research question, so your question about "checking if [you] don't have to reverse your IV and DV" does not make sense (check for what?) – Marquis de Carabas May 12 '16 at 3:41

You can try to prove that the number of hours spent on the internet is different for users who have previously made an on-line purchase simply by running a t-test. Equivalently, an ANOVA or an OLS regression with dummy variables (1 = purchase; 0 = no purchase) will provide you with the same results.