<div class="raw-html-embed">    <p>The <b>T.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 probability associated with a Student's t-Test. Use <b>T.TEST</b> to determine whether two samples are likely to have come from the same two underlying populations that have the same mean.</p>

    <h5 class="pt8">Syntax</h5>
    <p><b><em>T.TEST(array1, array2, tails, type)</em></b></p>
    <p>The <b>T.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>array1</em></b></td>
                <td>The first range of numeric values.</td>
            </tr>
            <tr>
                <td><b><em>array2</em></b></td>
                <td>The second range of numeric values.</td>
            </tr>
            <tr>
                <td><b><em>tails</em></b></td>
                <td>The number of distribution tails. If it is 1, the function uses the one-tailed distribution. If it is 2, the function uses the two-tailed distribution.</td>
            </tr>
            <tr>
                <td><b><em>type</em></b></td>
                <td>A numeric value that specifies the kind of t-Test to be performed. The possible values are listed in the table below.</td>
            </tr>
        </tbody>
    </table>
    <p>The <b><em>type</em></b> argument can be one of the following:</p>
    <table style="width: 40%">
        <tbody>
            <tr>
                <th style="background-color: #f4f4f4"><b>Numeric value</b></th>
                <th style="background-color: #f4f4f4"><b>The kind of t-Test</b></th>
            </tr>
            <tr>
                <td><b><em>1</em></b></td>
                <td>Paired</td>
            </tr>
            <tr>
                <td><b><em>2</em></b></td>
                <td>Two-sample equal variance (homoscedastic)</td>
            </tr>
            <tr>
                <td><b><em>3</em></b></td>
                <td>Two-sample unequal variance (heteroscedastic)</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>T.TEST</b> function.</p>

    <h5 class="pt8">Examples</h5>
    <p>The figure below displays the result returned by the <b>T.TEST</b> function.</p>
    <p><img alt="T.TEST Function" src="https://static-helpcenter.teamlab.info/t_test_86e26a3598.png"></p></div>

T.TEST Function

Docs

Argument	Description
*array1*	The first range of numeric values.
*array2*	The second range of numeric values.
*tails*	The number of distribution tails. If it is 1, the function uses the one-tailed distribution. If it is 2, the function uses the two-tailed distribution.
*type*	A numeric value that specifies the kind of t-Test to be performed. The possible values are listed in the table below.

Numeric value	The kind of t-Test
1	Paired
2	Two-sample equal variance (homoscedastic)
3	Two-sample unequal variance (heteroscedastic)

T.TEST Function

Syntax

Notes

Examples

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