web-apps/apps/spreadsheeteditor/main/resources/help/en/Functions/trend.htm
Julia Radzhabova c9dc69901f Update help
2021-01-14 14:37:06 +03:00

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<title>TREND Function</title>
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<h1>TREND Function</h1>
<p>The <b>TREND</b> function is one of the statistical functions. It is used to calculate a linear trend line and returns values along it using the method of least squares.</p>
<p>The <b>TREND</b> function syntax is:</p>
<p style="text-indent: 150px;"><b><em>TREND(known_ys, [known_xs], [new_xs], [const])</em></b></p>
<p>where</p>
<p><b><em>known_ys</em></b> is the set of y-values you already know in the <em>y = mx + b</em> equation.</p>
<p><b><em>known_xs</em></b> is the optional set of x-values you might know in the <em>y = mx + b</em> equation.</p>
<p><b><em>new_xs</em></b> is the optional set of x-values you want y-values to be returned to.</p>
<p><b><em>const</em></b> is an optional argument. It is a TRUE or FALSE value where TRUE or lack of the argument forces <em>b</em> to be calculated normally and FALSE sets <em>b</em> to 0 in the <em>y = mx + b</em> equation and m-values correspond with the <em>y = mx</em> equation.
</p>
<p>To apply the <b>TREND</b> function,</p>
<ol>
<li>select the cell where you wish to display the result,</li>
<li>
click the <b>Insert function</b> <img alt="Insert function icon" src="../images/insertfunction.png" /> icon situated at the top toolbar,
<br />or right-click within a selected cell and select the <b>Insert Function</b> option from the menu,
<br />or click the <img alt="Function icon" src="../images/function.png" /> icon situated at the formula bar,
</li>
<li>select the <b>Statistical</b> function group from the list,</li>
<li>click the <b>TREND</b> function,</li>
<li>enter the required argument,</li>
<li>press the <b>Enter</b> button.</li>
</ol>
<p>The result will be displayed in the selected cell.</p>
<p style="text-indent: 150px;"><img alt="TREND Function" src="../images/trend.png" /></p>
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