I am using EViews 10 (Univ. ed.) and I estimated impulse response functions from standarized data in different VAR and FAVAR models, which all include three different (non-standardized) monetary policy variables.
I next want to manipulate the impulse responses in two different ways:
1) Scaling shocks (e.g., to the central bank's interest rate) such that they represent a one-period 25 bps increase
Am I right in assuming that in order to scale the response to policy variable y_i, I would need to multiply the response values and the associated confidence intervals by a factor equal to 0.25/stdv(y_i)?
2) Changing the coverage of the confidence intervals
Using the command
, I derived impulse response functions along with the relevant standard errors. Am I correct in assuming that I would just need to multiply the retrieved standard errors by a factor equal to 1.96 in order to retrieve the upper (and by implication lower) bands of a 95% confidence interval?
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Your help will be much appreciated. Thanks in advance!