Hello everyone

Me and a fellow student are currently working on an assignment investigating political responsiveness of danish MP's on three different income groups (low, average, high income).

In the danish electoral system there are 9 constituencies where we in each of these have made an average opinion of the politicians elected and for the three income groups, on three politcal questions.

After doing this we have regressed the data, but our results seem weak and we're not sure why. We have thought about multicollinearity, but when we do a VIF command we get the result of 0.42, which does not seem that bad.

Do you have any ideas or suggestions to why the results are not statistical significant?

I have attached a photo,

Thank you in advance for your help.