I am trying to predict what are the determinants for foreign direct investments in Lithuanian regions from 2011 to 2017.
My dependent variable is foreign direct investments per capita in Lithuanian regions. And I have a variety of explanatory variables such as unemployment rate, labor cost, infrastructure quality and so on.
However, the data is really not normally distributed. Data does not show any linearity.
That is why I cannot use the multiple linear regression.
I found out that for the data which has a Poisson distribution, two regressions are suitable: Poisson and Negative binomial regression.
According to my calculations the dispersion is higher that the mean, so I should use the negative binomial regression.
Please correct me if I am wrong.
Also, how do you account for changing variables in time? (From 2011 to 2017)