Hey everyone,
I'm studying time series topics and I found an example on "real exchange rates". Author says that "deviation from PPP is real exchange rate", but I can't understand the sentence! I put the complete sentence below.
Very regards for answers.
"However, at least for advanced economies, deviations from PPP are highly persistent and a substantial body of evidence suggests that the real exchange rates, measuring deviation from PPP, are indistinguishable from non-stationary time series."