Statistics and Data Science Seminar
Matthew J. Bourque and Xuejing Wang
MSCS, UIC
Intervention Analysis in a Water Usage Study
Abstract: A water main bringing water into a Chicago suburb was damaged on or
about January 5, 2002. The damage was not discovered until February 11,
2004, for a total of approximately 765 days. We have daily water usage
data from 1989 through 2007, and want to determine (i) whether there is
a statistically significant increase in water flow during the period
from January 2002 until February 2004 and (ii) if there is a significant
increase, to estimate the amount of extra water flow during that time.
We use intervention analysis to fit an ARIMA model, and from the
estimates of the parameters we get the result. We will also discuss more
generally about intervention analysis.
Thursday April 24, 2008 at 2:15 PM in SEO 712