Which of the following processes (Xt)t is weakly stationary?  A: Xt = 1:6 + Xt 1 + V t B: Xt = 0:6 Xt-1 +V t C: Xt = 0:8 Xt-1 + V t D: Xt = 0:8 t + 0:6 V t – 1 The term (t) is always assumed to be white noise with variance one

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
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Which of the following processes (Xt)t is weakly stationary? 
A: Xt = 1:6 + Xt 1 + V t
B: Xt = 0:6 Xt-1 +V t
C: Xt = 0:8 Xt-1 + V t
D: Xt = 0:8 t + 0:6 V t – 1

The term (t) is always assumed to be white noise with variance one

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