unitroot_kpss: Unit Root Test Statistics
Description
unitroot_kpss
computes the statistic for the Kwiatkowski et al. unit root test with linear trend and lag 1.
unitroot_pp
computes the statistic for the `'Z-alpha'' version of Phillips & Perron unit root test with constant trend and lag 1.
Usage
unitroot_kpss(x)unitroot_pp(x)
Arguments
x
a univariate time series.