I think the most appropriate price we could tell is where the exchange has the most volume in it. In different exchange, the price of Bitcoin is being traded so the price is no the same.
Do you believe in the statistics that stock exchanges provide? Lol! These figures have nothing to do with reality. Bots trade among themselves and increase trading volumes. Only exchanges know the real statistics and they are not interested in sharing information with you. The main volumes of trade go past the exchange.