Suppose that the exchange rate at 4 pm today proves to be


The most recent estimate of the daily volatility of the U.S. dollar sterling exchange rate is 0.6%, and the exchange rate at 4 p.m. yesterday was 1.5000. The parameter λ in the EWMA model is 0.9. Suppose that the exchange rate at 4 p.m. today proves to be 1.4950. How would the estimate of the daily volatility be updated?

 

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Civil Engineering: Suppose that the exchange rate at 4 pm today proves to be
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