A unit root test tests whether a
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Unit root — In time series models in econometrics, a linear stochastic process has a unit root if 1 is a root of the process s characteristic equation. The process will be non stationary. If the other roots of the characteristic equation lie inside the unit… … Wikipedia
Dickey–Fuller test — In statistics, the Dickey–Fuller test tests whether a unit root is present in an autoregressive model. It is named after the statisticians D. A. Dickey and W. A. Fuller, who developed the test in 1979.[1] Contents 1 Explanation 2 Dealing with… … Wikipedia
Augmented Dickey-Fuller test — In statistics and econometrics, an augmented Dickey Fuller test (ADF) is a test for a unit root in a time series sample. It is an augmented version of the Dickey Fuller test for a larger and more complicated set of time series models.The… … Wikipedia
Root locus — In control theory, the root locus is the locus of the poles and zeros of a transfer function as the system gain K is varied on some interval. The root locus is a useful tool for analyzing single input single output (SISO) linear dynamic systems.… … Wikipedia
test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… … Medical dictionary
Test light — Neon test lamp for line voltages A test light, test lamp, voltage tester, or mains tester is a very simple piece of electronic test equipment used to determine the presence or absence of an electric voltage in a piece of equipment under test.… … Wikipedia
Dickey-Fuller test — In statistics, the Dickey Fuller test tests whether a unit root is present in an autoregressive model. It is named after the statisticians D. A. Dickey and W. A. Fuller, who developed the test in the 1970s. Explanation A simple AR(1) model is: y… … Wikipedia
Augmented Dickey-Fuller-Test — Als Dickey Fuller Tests bezeichnet man in der Statistik die von D. Dickey und W. Fuller in den 70er Jahren entwickelten Einheitswurzeltests, die die Nullhypothese eines stochastischen Prozesses mit Einheitswurzel gegen die Alternative eines… … Deutsch Wikipedia
Dickey-Fuller-Test — Als Dickey Fuller Tests bezeichnet man in der Statistik die von D. Dickey und W. Fuller in den 70er Jahren entwickelten Einheitswurzeltests, die die Nullhypothese eines stochastischen Prozesses mit Einheitswurzel gegen die Alternative eines… … Deutsch Wikipedia
nth root — In mathematics, the nth root of a number x is a number r which, when raised to the power of n, equals x rn = x, where n is the degree of the root. A root of degree 2 is usually called a square root and a root of degree 3, a cube root. For example … Wikipedia
