Lecture 16 Unit Root Tests
RS – EC2 - Lecture 16 6 11 • Functional CLT(Donsker’s FCLT) If εt satisfies some assumptions, then WT(r) W(r), where W(r) is a standard Brownian motion for r Є[0, 1].Note: That is, sample statistics, like WT(r), do not converge to constants, but to functions of Brownian motions. • A CLT is a limit for one term of a sequence of partial sums {Sk},
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