To me more proper, I should have mentioned I'm not confident of the conclusions and opinions by the agents, not the data.
So far, I did ask about the source of their research. Quite a few tell me the research is from their company's research department who then put into slides for them to show me.
For the same facts and figures, you would agree that differing conclusions/opinions can be reached.
For eg, 2 months ago, if I share my "facts and figures" that markets has been rising and will continue rising for the next 10 years, would you believe in it and buy into the market? I would tell you "this time it is different" and markets will continue rising.
Yet now, many agents are saying that property prices are rising (backed by facts and figures, from URA/SRX/Squarefoot/99.co/etc), and will continue rising further and further (the opinion).
You get what I mean.