http://genome.sph.umich.edu/w/index.php?action=history&feed=atom&title=C%2B%2B_Class_Averages 2026-10-15T15:05:31Z Revision history for this page on the wiki MediaWiki 1.43.1 http://genome.sph.umich.edu/w/index.php?title=C%2B%2B_Class_Averages&diff=1897&oldid=prev 2010-08-02T16:27:11Z

<p>Created page with &#039;&lt;source lang=&quot;cpp&quot;&gt; // Static method that returns the mean, meadian, and mode for this dataset. void Average::calculateAverages(double&amp; mean, doub…&#039;</p> <p><b>New page</b></p><div>&lt;source lang=&quot;cpp&quot;&gt;<br /> // Static method that returns the mean, meadian, and mode for this dataset.<br /> void Average::calculateAverages(double&amp; mean,<br /> double&amp; median,<br /> std::vector&lt;int&gt;&amp; modes)<br /> {<br /> // Track the number of entries that have been passed so far.<br /> // This is for determing the median.<br /> int numSeen = 0;<br /> int dataSetSize = myDataSet.size();<br /> bool isOdd = (NumDataValues() % 2);<br /> int midPoint = NumDataValues() / 2;<br /> <br /> median = -1;<br /> int average = 0;<br /> <br /> for(int i = 0; i &lt; dataSetSize; i++)<br /> {<br /> if(median == -1)<br /> {<br /> // Still haven&#039;t calculated median, so keep checking it.<br /> numSeen += myDataSet[i];<br /> if(numSeen &gt;= midPoint)<br /> {<br /> // Have reached the midpoint.<br /> // If the length is odd, just return this value.<br /> if(isOdd)<br /> {<br /> median = i;<br /> }<br /> else<br /> {<br /> // The length is even. So need to take the two midpoints<br /> // and average them. midPoint is set to the first midpoint<br /> // also, the next one needs to be averaged.<br /> // the previous value and average them.<br /> if(numSeen == midPoint)<br /> {<br /> if(average == 0)<br /> {<br /> average = i;<br /> }<br /> }<br /> else<br /> {<br /> if(average == 0)<br /> {<br /> median = i;<br /> }<br /> else<br /> {<br /> median = (average + i)/2.0;<br /> }<br /> }<br /> }<br /> }<br /> }<br /> <br /> // Determine if this position is part of the mode.<br /> if(myDataSet[i] == myMaxCount)<br /> {<br /> modes.push_back(i);<br /> }<br /> }<br /> }<br /> &lt;/source&gt;</div>

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