Augmented Dickey-Fuller Test for stationarity was performed on a certain series (both a t level, that...
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Augmented Dickey-Fuller Test for stationarity was performed on a certain series (both a t level, that is original series, and at first difference). The output from R are given below: Augmented Dickey-Fuller Test data: at level (original) Dickey-Fuller= -0.99253, Lag order = 4, p-value = 0.9324 i. Augmented Dickey-Fuller Test data: first difference Dickey-Fuller -3.3902, Lag order 4, p-value = 0.06496 State the null and the alternative hypotheses for both at level and first difference; Interpret the results of this test. Is stationarity achieved? If not recommend an appropriate step to achieve stationarity. Augmented Dickey-Fuller Test for stationarity was performed on a certain series (both a t level, that is original series, and at first difference). The output from R are given below: Augmented Dickey-Fuller Test data: at level (original) Dickey-Fuller= -0.99253, Lag order = 4, p-value = 0.9324 i. Augmented Dickey-Fuller Test data: first difference Dickey-Fuller -3.3902, Lag order 4, p-value = 0.06496 State the null and the alternative hypotheses for both at level and first difference; Interpret the results of this test. Is stationarity achieved? If not recommend an appropriate step to achieve stationarity.
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