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Applied Econometrics

Applied Econometrics. 24. Time Series Data. Modeling an Economic Time Series. Observed y0, y1,

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Applied Econometrics

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    1. Applied Econometrics William Greene Department of Economics Stern School of Business

    2. Applied Econometrics 24. Time Series Data

    3. Modeling an Economic Time Series Observed y0, y1, …, yt,… What is the “sample” Random sampling? The “observation window”

    4. Estimators Functions of sums of observations Law of large numbers? Nonindependent observations What does “increasing sample size” mean? Asymptotic properties? (There are no finite sample properties.)

    5. Interpreting a Time Series Time domain: A “process” y(t) = ax(t) + by(t-1) + … Regression like approach/interpretation Frequency domain: A sum of terms y(t) = Contribution of different frequencies to the observed series. (“High frequency data and financial econometrics – “frequency” is used slightly differently here.)

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