Fig 7. A time series plot of the residuals with corresponding ACF diagram, and a histogram for the ARIMA (0,1,1) model with drift.
ACF, autocorrelation function; ARIMA, autoregressive integrated moving average.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.