I am currently investigating the effect of government regulations on Airbnb's key performance indicators (supply, demand, ADR and market share). Therefore I analyze three aspects:
1) three months before and three months after regulations;
2) comparison with the same period a year earlier; and,
3) change in type of supply (as most regulations relate to entire homes).
Now, I doubt if I am required to use statistical evidence (SPSS outcomes) to come to my conclusions or if tables/obervations in data are sufficient to come to a conclusion. Also, I am not sure which test is the most appropriate.
I thank you for any comment or advice.