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.

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