I dont get this question and cant find an I(1) process anywhere
any help would be so useful
What is meant by a stationary process?
(a) Consider the processes
and show that the first is stationary and the second is not.
(b) What is an I(1) process? How would you test that a data series
has been generated from an I(1) process?
(c) What is meant by saying that series are cointegrated?
(d) How can cointegration come about?
Thanks in advance