The phrase "average exchange rate for" is correct and usable in written English.
It can be used when discussing the typical value at which one currency can be exchanged for another over a specific period.
Example: "The average exchange rate for the euro against the dollar has fluctuated significantly this year."
Alternatives: "mean exchange rate for" or "typical exchange rate for".
At the average exchange rate for that period, 60 billion rubles was equal to about $18 million.
As a result, the company said it expected revenue to remain stable, assuming an average exchange rate for the year of about $1.40 to the euro.
(In calculating an average exchange rate for the dollar, the currencies of each other nation is weighted according to the volume of trade of that nation with the United States).
Revenues and operating income are for the 2014-15 season, converted into U.S. dollars based on average exchange rate for the 2014-15 season.
The amounts are published in the national currency and the euro, using the average exchange rate for the 6 months preceding the publication of the data.
Methodology: Revenue and operating income (earnings before interest, taxes, depreciation and amortization, player trading and disposal of player registrations) figures are for the 2014-15 season, converted into U.S. dollars based on the average exchange rate for that period.
Using average exchange rates for the past year, Malta paid an estimated $153m to Socar for gas.
Methodology: All revenues and operating income figures in our table are for the 2016-17 season, converted into U.S. dollars based on average exchange rates for the same period.
All revenues and operating income figures in our table are for the 2015-16 season, converted into U.S. dollars based on average exchange rates for the same period.
Some bookkeeping: All revenues and operating income figures in our table are for the 2016-2017 season, converted into U.S. dollars based on average exchange rates for the same period.
All costs were expressed in Euros using 2010 prices and the average exchange rates for that year (€1=Kr9.54, €1=£0.86 and €1=R$2.33).
