CAS Exam MAS-I Fall 2018, Question 43
Study guide: Exam MAS-II
You are given the following time series model:
x_t = \frac{2}{3}x_{t-1} + \frac{1}{3}x_{t-2} + w_t
where \{w_t\} is a white noise series.
Determine whether this time series is stationary and/or invertible.
- A) Non-stationary, invertible
- B) Non-stationary, not invertible
- C) Stationary, invertible
- D) Stationary, not invertible
- E) The correct answer cannot be determined from the information given
Answer this question and see the worked solution