I'm writing a research paper. Working title: The relationship between raising cigarrete taxes and effect on health and government collection. The main reason for this thesis is health - address the problem of the 1M new smokers, 47 diseases and 150,000 deaths a year. Sadly, legislators don't want to take on this fight for higher taxes for obvious reason. Anyway, I'd appreciate if anyone here could advice me on statistical method appropriate in my study and guide me how to do it. I'm new in Statistics. Thank you.