<!DOCTYPE rkhelp>
<document>
	<summary>
		This test computes the Phillips-Perron test for the null hypothesis that x has a unit root against a stationary alternative.
	</summary>

	<usage>
		Select the data sets for which you want to perform the Phillips-Perron test. For this test the samples need to be numeric vectors (see below for details).
	</usage>

	<settings>
		<caption id="tab_variables"/>
		<setting id="x">Select the data to be computed. The vectors need to be numeric, and can be of different length.</setting>
		<setting id="lshort">Which version of the truncation lag parameter should be used?</setting>
		<caption id="tab_options"/>
		<setting id="narm">Exclude missing values from calculation?</setting>
		<setting id="length">Show the total length of the data, and the number of missing values (purely informational, does not affect the test)?</setting>
	</settings>
	<related>
		<ul>
			<li><link href="rkward://rhelp/PP.test"/></li>
		</ul>
	</related>
</document>
