urca-internal: Critical values for Schmidt and Phillips Unit Root Test

In urca: Unit Root and Cointegration Tests for Time Series Data

Critical values for Schmidt and Phillips Unit Root Test

Description

This function is an internal function and is called by ur.sp. It computes the critical value of the Schmidt and Phillips test, given a level of significance, the polynomial degree of the test regression, the test type and the sample size.

Usage

.spcv(obs, type, pol.deg, signif)

Arguments

obs	The sample size.
type	The test type.
pol.deg	The polynomial degree.
signif	The significance level.

Value

The critical value of the test.

Author(s)

Bernhard Pfaff

References

Schmidt, P. and Phillips, P.C.B. (1992), LM Test for a Unit Root in the Presence of Deterministic Trends, Oxford Bulletin of Economics and Statistics, 54(3), 257–287.

Download possible at: https://cowles.yale.edu/, see rubric 'Discussion Papers (CFDPs)'.

See Also

ur.sp.

urca documentation built on May 29, 2024, 5:36 a.m.