Compute the Standardized Residuals from a Fitted ARIMA Model
Computes the internally standardized residuals from a fitted ARIMA model.
## S3 method for class 'Arima' rstandard(model,...)
model |
model fitted by the arima function |
... |
not used; kept here for consistency with the generic method |
residuals/(error std. dev.)
time series of standarized residuals
data(oil.price) m1.oil=arima(log(oil.price),order=c(0,1,1)) plot(rstandard(m1.oil),ylab='Standardized residuals',type='l') abline(h=0)
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