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The Dickey-Fuller test is a statistical test used to determine whether a time series is stationary or not. A stationary time series has constant mean and variance over time, which is an important assumption in many time series forecasting models, including ARIMA. If a time series is not stationary, it can be made stationary by differencing the data. The Dickey-Fuller test specifically tests the null hypothesis that a time series has a unit root, indicating non-stationarity. Option A is incorrect because the Dickey-Fuller test is not used to determine the best forecasting model. Option C is incorrect as the Dickey-Fuller test does not specifically address seasonal patterns but rather focuses on stationarity. Option D is incorrect because the Dickey-Fuller test is a diagnostic tool and not a forecasting method. Option E is incorrect because the test does not detect outliers but rather checks for stationarity.
Identify the segment that contains a grammatical error. If there is no error, select 'No error'.
It is custom for the Ministry of external affair...
Directions: The following sentences are divided into parts. Identify if there is any error in any of the parts. If there is an error, choose the lette...
At his birth, it was predicted that he will grow up to be a world ruler but it was not clear whether this would be political or spiritual.
Shooting as well as horse riding (A) are taught to cadets (B) at the National Defence Academy (C) every morning. (D) / No error (E)
Find the correct sentence.
All year Daly had imitated that (A)/he was ready to step down (B)/and last night reports of his resignation (C)/did not come as any surprise (D).
The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
Won’t you / please come /...
His maid servant behavior (A)/ is undoubtedly indecent (B)/ but I don’t understand (C)/how he tolerates it (D)/ No Error (E).
With an aim to boost economic growth, (A)/ the government have announced (B)/ several initiatives, including tax rebate (C)/ and incentives of small bus...
In the following question, a sentence is given, divided into four parts (A), (B), (C) and (D). The error, if any, will only be in TWO PHRASES/PARTS of t...