Question
(A) David made a gesture, spreading / (B) out his hands
as if he was/ (C) showing that he had no / (D) explanation to make/ (E) No error.Solution
Instead of he was it should be he were in the sentence because the clause needs a subjunctive form; i.e, the verb should be were and not was.
Which of the following methods is most commonly used for time series decomposition?
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In time series analysis, the Dickey-Fuller test is used to:
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