Start learning 50% faster. Sign in now
Explanation: The Dickey-Fuller test is a statistical test used to check whether a time series is stationary. Stationarity implies that the statistical properties of the series, such as mean and variance, do not change over time. In this test, the null hypothesis assumes that the series has a unit root (non-stationary), while the alternative hypothesis assumes stationarity. By examining the p-value, we determine whether to reject the null hypothesis. A p-value below a chosen significance level (e.g., 0.05) indicates stationarity. This test is essential for models like ARIMA, which require stationary data for accurate forecasting. Option A: This describes autocorrelation, not the Dickey-Fuller test. Option C: Decomposition separates components but does not test stationarity. Option D: Measuring randomness pertains to residual analysis, not Dickey-Fuller. Option E: This describes autoregressive modeling, not stationarity testing.
In operating systems, what does the "Working Set Model" primarily deal with?
Consider the following statement about Global Gender Gap Index 2022.
I. India ranks 135 among a total of 146 countries.
II. It is released...
What was the theme of World Pulses Day 2025?
Consider the following statement about Kyasanur forest disease:
1. Recently, a study confirmed the presence of the Kyasanur forest disease (KFD...
Indian Space Research Organisation (ISRO) recently collaborated with which global tech firm to fuel the growth of space technology startups in the country?
What was the notable achievement of India's first indigenously-made 1500 HP engine for Main Battle Tanks during its maiden test-firing at BEML in Mysuru?
Who has been given the title of Time magazine’s “Person of the year 2022”?
What does the World Health Organization (WHO) consider the mortality effects of loneliness equivalent to?
Continuing with the conduct of Maritime Partnership Exercises (MPX) with Friendly Foreign Countries, which Indian naval ship exercised with Japanese Mar...
Two hill ranges Gandachera and Atharamura have been renamed in Kokborok as Ganda Tuisa and Hachuk Berem respectively. These hill ranges are in ______.