I'm doing an analysis on how one variable affects another variable over time and I am not sure how I should test this. Our more exactly, I don't know which type of statistical test method I should use. The data looks like this
SO... I want to test IF and HOW the variable "sweibr" is affecting the variable "swedendebt" over time. Further,I also want to test how the relationship between the variables changes when sweibr goes from positive to negative. ( I have made a dummyvariable on sweibr for this).
I would be thankful if someone could help me solve this.