

calculateStatistic()  method to calculate the Chisquared value. 
INPUT PARAMS : $count_values .. Reference of an hash containing
the count values computed by the count.pl program. RETURN VALUES : $x2 .. x2 value for this bigram. 
getStatisticName()  Returns the name of this statistic 
INPUT PARAMS : none
RETURN VALUES : $name .. Name of the measure. 
Ted Pedersen, University of Minnesota Duluth
<tpederse@d.umn.edu>Satanjeev Banerjee, Carnegie Mellon University
<satanjeev@cmu.edu>Amruta Purandare, University of Pittsburgh
<amruta@cs.pitt.edu>Bridget ThomsonMcInnes, University of Minnesota Twin Cities
<bthompson@d.umn.edu>Saiyam Kohli, University of Minnesota Duluth
<kohli003@d.umn.edu>
Last updated: $Id: x2.pm,v 1.10 2006/06/21 11:10:52 saiyam_kohli Exp $
<http://groups.yahoo.com/group/ngram/>
Copyright (C) 20002006, Ted Pedersen, Satanjeev Banerjee, Amruta Purandare, Bridget ThomsonMcInnes and Saiyam KohliThis program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to
The Free Software Foundation, Inc., 59 Temple Place  Suite 330, Boston, MA 021111307, USA.Note: a copy of the GNU General Public License is available on the web at <http://www.gnu.org/licenses/gpl.txt> and is included in this distribution as GPL.txt.
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