1. Suppose the dollar exchange rates of the euro and the yen are equally variable. The euro, however, tends to depreciate unexpectedly against the dollar when the return on the rest of your wealth is unexpectedly high, while the yen tends to appreciate unexpectedly in the same circumstances.
As a U.S. resident, which currency, the euro or the yen, would you consider riskier?
2. In October 1979, the U.S. central bank announced it would play a less active role in limiting fluctuations in dollar interest rates.
After this new policy was put into effect, the dollar's exchange rates against foreign currencies became more volatile. Does our analysis of the foreign exchange market suggest any connection between these two events?