I am analysing survey data for someone. It is a convenience sample online survey. It asks questions about attitudes to things such as social media,online adverts and includes a question on on line buying. The hypotheses is that the more exposure to social media and online ads (IVs) the more purchasing there will be (DVs).

The IVs are in the form of likert scales; the DV is ordinal I think (frequency bands : e.g. 0-5, 6-10 etc).The tests which I have used are spearman's rho correlation and chi square (testing IVs against DV).

Can anyone suggest any other non parametric tests in SPSS that might be used to investigate the relationship of IVs and DV?