KPSS test - Wikipedia In econometrics, Kwiatkowski–Phillips–Schmidt–Shin (KPSS) tests are used for testing a null hypothesis that an observable time series is stationary around a deterministic trend (i e trend-stationary) against the alternative of a unit root
Kwiatkowski-Phillips-Schmidt-Shin (KPSS) - GeeksforGeeks The KPSS (Kwiatkowski-Phillips-Schmidt-Shin) test checks whether a time series is stationary around a mean or deterministic trend It tests the null hypothesis that the series is stationary