# Question: What is the commonly used mathematical tool for describing the

What is the commonly used mathematical tool for describing the movement of interest rates that can incorporate the properties of an interest-rate model?

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Answer the below questions. (a) Why is the most common interest-rate model used to describe the behavior of interest rates a one-factor model? (b) What is the one-factor in a one-factor interest-rate model? What is an equilibrium interest-rate model? Answer the below questions. (a) What is meant by the option-adjusted spread? (b) What is the option-adjusted spread relative to? Does a callable bond exhibit negative or positive convexity? Suppose that the following values for a RMBS are correct for each assumption: PSA Assumption Value of Security 192 112.10 194 111.80 200 111.20 202 111.05 210 110.70 Assuming that the value of the security in the ...Post your question