4/2/24 Flashcards
LOOP Equation
PCUSD = E$/€ * PCEUR
Law of One Price (LOOP)
Without any natural or artificial barriers to trade, the same good sold in different locations must have the same price when measured in a common currency
Purchasing Power Parity (PPP)
We say that the exchange rate is at PPP if two baskets are the same price when measured in a common currency
PPP equation
PUSD = E$/€ * PEUR
whats the difference between the LOOP and PPP equations?
PPP is for the whole basket and PPP is for individual goods
What is true if LOOP holds for ALL goods in a basket?
PPP hold
Real Exchange rate
The number of baskets of US goods that collectively cosst the same as one basket of European goods
Real Exhchange Rate equation
qUSD/EUR = E$/€ * PEUR/PUS
how much do european goods cost relative to US goods if the Real Exchange Rate is 2?
They are twice as expensive
Spot Exchange rate equation
E$/€=PUSD/PEUR
With Relative PPP, what assumption is formed about the Real Exchange Rate
The Real Exchange Rate is constant
With absolute PPP, what assumption is formed about the Real Exchange Rate
It is constant AND equal to 1
What is the basic idea of the simple monetary model of prices
In the long run, the price level will be proportional to the money supply, where the constant of proportionality might depend on the interest rate
Money Demanded Equation
Md = P * L(i) * Y
Money Market Equilibrium condition
M=PL(i)Y