Start learning 50% faster. Sign in now
The Dickey-Fuller test is used to assess whether a given time series is stationary or exhibits a unit root. Stationarity means that the statistical properties of the data, such as mean, variance, and autocorrelation, are constant over time. If a time series is not stationary, it often contains trends or seasonality that can lead to inaccurate forecasting. The Dickey-Fuller test tests the null hypothesis that a time series has a unit root (i.e., it is non-stationary) against the alternative hypothesis that the series is stationary. This is critical because most time series forecasting models, such as ARIMA, require stationary data to produce accurate predictions. Why other options are wrong: a) The presence of seasonality : While stationarity tests can sometimes help identify seasonality, the Dickey-Fuller test does not directly test for seasonality. b) The relationship between lagged values : The Dickey-Fuller test does not test for lagged relationships; instead, it focuses on whether the series itself is stationary. c) Whether the data exhibits a random walk : The Dickey-Fuller test indirectly tests for a random walk by assessing if the data is stationary or not. d) The degree of trend in the data : While trends affect stationarity, the Dickey-Fuller test is not focused on quantifying the degree of the trend.
The books supplied to the sections will be in the custody of the Assistant Audit Officers in charge of the sections.
परित्याग का अंग्रेजी शब्द है -
Endowment Insurance के लिए लिए सही पारिभाषिक शब्द है
निम्नलिखित विकल्पों में से pool fund का हिंदी पर्याय होगा।...
The accomplice who is tendered pardon by a Magistrate, is not to be tried by the same Magistrate but by another Court.
शिक्षा एक ऐसा विषय है जिससे देश के सभी नागरिकों का सरोका...
निम्नलिखित में शिकायती शब्द का इनमे से क्या अर्थ नही...
निम्नलिखित विकल्पों में से Product शब्द का कौन सा पर्याय होगा...
गद्यांश के आधार पर Despite all the disruptions caused by the global pandemic का सही हिन्दी अनु...
Cash reserve ratio-