source/text/scalc/01/statistics_test_z.xhp


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<?xml version="1.0" encoding="UTF-8"?>
<helpdocument version="1.0">
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<meta>
<topic id="zteststat" indexer="include" status="PUBLISH">
<title xml-lang="en-US" id="tit">Z Test Statistics in Calc</title>
<filename>/text/scalc/01/statistics_test_z.xhp</filename>
</topic>
</meta>
<body>

<bookmark xml-lang="en-US" branch="index" id="bm_id05003">
<bookmark_value>Analysis toolpack;Z-test</bookmark_value>
<bookmark_value>Z-test;Analysis toolpack</bookmark_value>
<bookmark_value>Data statistics;Z-test</bookmark_value>
</bookmark>
<bookmark xml-lang="en-US" branch="hid/modules/scalc/ui/ztestdialog/ZTestDialog" id="bm_id05004" localize="false"/>
<bookmark xml-lang="en-US" branch="hid/modules/scalc/ui/ztestdialog/@@nowidget@@" id="bm_id05004" localize="false"/>
<section id="ztest">
    <h1 id="hd_id1000210"><variable id="ztesth1"><link href="text/scalc/01/statistics_test_z.xhp" name="Z-test">Z-test</link></variable></h1>
<paragraph id="par_id1003640" role="paragraph" xml-lang="en-US"><ahelp hid="modules/scalc/ui/ztestdialog/ZTestDialog">Calculates the z-Test of two data samples.</ahelp></paragraph>
</section>
<section id="howtoget">
<paragraph id="par_id1003650" role="paragraph" xml-lang="en-US"><variable id="sam02">Choose <menuitem>Data - Statistics - Z-test</menuitem></variable></paragraph>
</section>
<note id="par_id1003660">For more information on Z-tests, refer to the <link href="https://en.wikipedia.org/wiki/Z-test" name="English Wikipedia: Z-test">corresponding Wikipedia article</link>.</note>
<h2 id="hd_id1000220">Data</h2>
<paragraph id="par_id1003670" role="paragraph" xml-lang="en-US"><emph>Variable 1 range</emph>: The reference of the range of the first data series to analyze.</paragraph>
<paragraph id="par_id1003680" role="paragraph" xml-lang="en-US"><emph>Variable 2 range</emph>: The reference of the range of the second data series to analyze.</paragraph>
<paragraph id="par_id1003690" role="paragraph" xml-lang="en-US"><emph>Results to</emph>: The reference of the top left cell of the range where the test will be displayed.</paragraph><embed href="text/scalc/01/stat_data.xhp#grouped"/><embed href="text/scalc/01/stat_data.xhp#datafortests"/>
<h2 id="hd_id1000230">Results for z-Test:</h2>
<paragraph id="par_id1003700" role="paragraph" xml-lang="en-US">The following table shows the <emph>z-Test</emph> for the data series above:</paragraph>
<table id="Tabela13">
<tablerow>
<tablecell>
<paragraph id="par_id1003710" role="tablecontent" xml-lang="en-US">z-test</paragraph>
</tablecell>
<tablecell>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003720" role="tablecontent" xml-lang="en-US">Alpha</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003730" role="tablecontent" xml-lang="en-US" localize="false">0.05</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003740" role="tablecontent" xml-lang="en-US">Hypothesized Mean Difference</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003750" role="tablecontent" xml-lang="en-US" localize="false">0</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
</tablecell>
<tablecell>
<paragraph id="par_id1003760" role="tablecontent" xml-lang="en-US">Variable 1</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003770" role="tablecontent" xml-lang="en-US">Variable 2</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003780" role="tablecontent" xml-lang="en-US">Known Variance</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003790" role="tablecontent" xml-lang="en-US" localize="false">0</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003800" role="tablecontent" xml-lang="en-US" localize="false">0</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003810" role="tablecontent" xml-lang="en-US">Mean</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003820" role="tablecontent" xml-lang="en-US" localize="false">16.9230769231</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003830" role="tablecontent" xml-lang="en-US" localize="false">20.4615384615</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003840" role="tablecontent" xml-lang="en-US">Observations</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003850" role="tablecontent" xml-lang="en-US" localize="false">13</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003860" role="tablecontent" xml-lang="en-US" localize="false">13</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003870" role="tablecontent" xml-lang="en-US">Observed Mean Difference</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003880" role="tablecontent" xml-lang="en-US" localize="false">-3.5384615385</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003890" role="tablecontent" xml-lang="en-US">z</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003900" role="tablecontent" xml-lang="en-US">#DIV/0!</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003910" role="tablecontent" xml-lang="en-US">P (Z&lt;=z) one-tail</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003920" role="tablecontent" xml-lang="en-US">#DIV/0!</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003930" role="tablecontent" xml-lang="en-US">z Critical one-tail</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003940" role="tablecontent" xml-lang="en-US" localize="false">1.644853627</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003950" role="tablecontent" xml-lang="en-US">P (Z&lt;=z) two-tail</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003960" role="tablecontent" xml-lang="en-US">#DIV/0!</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id1003970" role="tablecontent" xml-lang="en-US">z Critical two-tail</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id1003980" role="tablecontent" xml-lang="en-US" localize="false">1.9599639845</paragraph>
</tablecell>
<tablecell>
</tablecell>
</tablerow>
</table>
<section id="relatedtopics">
<embed href="text/scalc/01/stat_data.xhp#otherstat"/>
</section>
</body>
</helpdocument>