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In finance, an exchange rate (also known as a foreign-exchange rate, forex rate, ER, FX rate or Agio) between two currencies is the rate at which one currency will be exchanged for another.It is also regarded as the value of one country’s currency in relation to another currency. For example, an interbank exchange rate of 119 Japanese yen (JPY, ? 119 will be exchanged for each US$1 or that US$1 will be exchanged for each ? In this case it is said that the price of a dollar in relation to yen is ?
It has to pay suppliers in other countries with a currency different from its home country’s currency.The real exchange rate (RER) is the purchasing power of a currency relative to another at current exchange rates and prices.It is the ratio of the number of units of a given country's currency necessary to buy a market basket of goods in the other country, after acquiring the other country's currency in the foreign exchange market, to the number of units of the given country's currency that would be necessary to buy that market basket directly in the given country.In order to determine which is the fixed currency when neither currency is on the above list (i.e.both are "other"), market convention is to use the fixed currency which gives an exchange rate greater than 1.000.The home country is where a company is headquartered.
The firm is likely to be paid or have profits in a different currency and will want to exchange it for its home currency.
This is the exchange rate (expressed as dollars per euro) times the relative price of the two currencies in terms of their ability to purchase units of the market basket (euros per goods unit divided by dollars per goods unit).
If all goods were freely tradable, and foreign and domestic residents purchased identical baskets of goods, purchasing power parity (PPP) would hold for the exchange rate and GDP deflators (price levels) of the two countries, and the real exchange rate would always equal 1.
There are various ways to measure RER. Thus the real exchange rate is the exchange rate times the relative prices of a market basket of goods in the two countries.
For example, the purchasing power of the US dollar relative to that of the euro is the dollar price of a euro (dollars per euro) times the euro price of one unit of the market basket (euros/goods unit) divided by the dollar price of the market basket (dollars per goods unit), and hence is dimensionless.
Authors test the suggested model on high-frequency time series data of USD/CAD and examine the ability to forecast exchange rate values for the horizon of one day.