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Explain the use of correlograms in time series analysis 2.Distinguish between: (a) Dickey Fuller (DF) test. (b) Augmented Dickey-Fuller (ADF) tests...

1. Explain the use of correlograms in time series analysis


2.Distinguish between: 


 (a) Dickey Fuller (DF) test. 

(b) Augmented Dickey-Fuller (ADF) tests


3. It is common practice to include the time or trend variable in a regression model:   


(a) Explain the difference between a deterministic and stochastic trend.

(b) Differentiate between a trend stationary process (TSP) and difference stationary process (DSP)

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