<div class="raw-html-embed">    <p>The <b>Z.TEST</b> function is one of the <a href="../../docs/userguides/spreadsheet_editor/InsertFunction.aspx#statistical" onclick="onhyperlinkclick(this)">statistical functions</a>. It is used to return the one-tailed P-value of a z-test. For a given hypothesized population mean, x, <b>Z.TEST</b> returns the probability that the sample mean would be greater than the average of observations in the data set (array) — that is, the observed sample mean.</p>

    <h5 class="pt8">Syntax</h5>
    <p><b><em>Z.TEST(array, x, [sigma])</em></b></p>
    <p>The <b>Z.TEST</b> function has the following arguments:</p>
    <table style="width: 40%">
        <tbody>
            <tr>
                <th style="background-color: #f4f4f4" width="150ch"><b>Argument</b></th>
                <th style="background-color: #f4f4f4"><b>Description</b></th>
            </tr>
            <tr>
                <td><b><em>array</em></b></td>
                <td>The range of numeric values against which to test <b><em>x</em></b>.</td>
            </tr>
            <tr>
                <td><b><em>x</em></b></td>
                <td>The value to test.</td>
            </tr>
            <tr>
                <td><b><em>sigma</em></b></td>
                <td>A population standard deviation. This is an optional argument. If it is omitted, the sample standard deviation is used.</td>
            </tr>
        </tbody>
    </table>

    <h5 class="pt8">Notes</h5>
    <p><a href="../../docs/userguides/spreadsheet_editor/InsertFunction.aspx#howtoapplyfunctions_block" onclick="onhyperlinkclick(this)">How to apply</a> the <b>Z.TEST</b> function.</p>

    <h5 class="pt8">Examples</h5>
    <p>The figure below displays the result returned by the <b>Z.TEST</b> function.</p>
    <p><img alt="Z.TEST Function" src="https://static-helpcenter.teamlab.info/z_test_0f33a2e52a.png"></p></div>

Z.TEST Function

Docs

Argument	Description
*array*	The range of numeric values against which to test x.
x	The value to test.
*sigma*	A population standard deviation. This is an optional argument. If it is omitted, the sample standard deviation is used.

Z.TEST Function

Syntax

Notes

Examples

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