// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
//
// Contact: phylosoft @ gmail . com
-// WWW: www.phylosoft.org/forester
+// WWW: https://sites.google.com/site/cmzmasek/home/software/forester
package org.forester.util;
public double sampleVariance() {
validate();
if ( getN() < 2 ) {
- throw new ArithmeticException( "attempt to calculate sample variance for less then two values" );
+ return 0;
}
return ( sumDeviations() / ( getN() - 1 ) );
}