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<h4>mean</h4>
<pre>public static&nbsp;java.lang.Object&nbsp;mean(java.lang.Object&nbsp;colname)</pre>
<div class="block"><p>Returns a mean reducer that produces a mean value of an individual source column.</p></div>
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<h4>rowCount</h4>
<pre>public static&nbsp;java.lang.Object&nbsp;rowCount(java.lang.Object&nbsp;colname)</pre>
<div class="block"><p>Returns a rowCount reducer that returns the 