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Algebra & Trigonometry with Analytic Geometry

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter5: Inverse, Exponential, And Logarithmic Functions

Section5.6: Exponential And Logarithmic Equations

Problem 70E

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QUESTION 4
Which of the following is necessary for a time series, Y, to be considered non-stationary?
The variance of the time series increases as time goes on.
The mean of the time series declines to zero as time goes on.
The correlation between Y and Y Is stable.
I+h
The correlation between Y and Y
declines to zero as time goes on.

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