--- loncom/interface/lonstatistics.pm 2002/03/06 18:42:01 1.7 +++ loncom/interface/lonstatistics.pm 2002/03/07 00:05:21 1.9 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # (Publication Handler # -# $Id: lonstatistics.pm,v 1.7 2002/03/06 18:42:01 minaeibi Exp $ +# $Id: lonstatistics.pm,v 1.9 2002/03/07 00:05:21 minaeibi Exp $ # # Copyright Michigan State University Board of Trustees # @@ -67,7 +67,6 @@ my $OpSel1; my $OpSel2; my $OpSelDis1; my $OpSelDis2; -my $CurDis=0; my $OpSel3; my $OpSel4; my $GData; @@ -79,8 +78,7 @@ my $HWN; my $P_Order; my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod", 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff", - 9,"S.D.",10,"Skew.", - 11,"D.F.",12,"U.A.",13,"L.A.",14,"U.R.",15,"L.R."); + 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd"); #------- Processing upperlist and lowerlist according to each problem sub ProcessDisc { @@ -91,7 +89,8 @@ sub ProcessDisc { my @Dis; my $Slvd=0; my $tmp; - my $Sum=0; + my $Sum1=0; + my $Sum2=0; my $nIdx=0; my $nStud=0; my %Proc; @@ -103,14 +102,16 @@ sub ProcessDisc { do { $nIdx++; $nStud++; - $Sum += $Dis[$CurDis]; + $Sum1 += $Dis[0]; + $Sum2 += $Dis[1]; ($Prb,$tmp)=split(/\=/,$List[$nIdx]); @Dis=split(/\+/,$tmp); } while ( $Prb eq $Temp && $nIdx < $Count ); - $Proc{$Temp}=$Sum.':'.$nStud; - $Proc{$Temp}=($Sum/$nStud).':'.$nStud; +# $Proc{$Temp}=($Sum1/$nStud).':'.$nStud; + $Proc{$Temp}=($Sum1/$nStud).':'.($Sum2/$nStud); # $r->print("$nIdx) $Temp --> ($nStud) $Proc{$Temp}
"); - $Sum=0; + $Sum1=0; + $Sum2=0; $nStud=0; } return %Proc; @@ -348,27 +349,21 @@ sub PreStatTable { ' #yes : Number of students solved the problem by override.
'. ' %Wrng : Percentage of students tried to solve the problem but'. ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]
'. -# ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]
'. - ' DoDiff : Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]
'. +# ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]
'. Kashy formula + ' DoDiff : Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]
'. #Gerd formula ' S.D. : Standard Deviation of the tries.'. '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1)'. ' where Xi denotes every student\'s tries ]
'. ' Skew. : Skewness of the students tries.'. - ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]
'. - - ' Dis.F. : Discrimination Factor. [ Sum of Partial Credits'. - ' Awarded / Total Number of Tries in %27 upper and lower students]
'. - ' U.A. : Upper %27 Award
'. - ' L.A. : Lower %27 Award
'. - ' U.R. : Upper %27 Records
'. - ' L.R. : Lower %27 Records'. - -# "
The Upper 27% has $UpCnt records.". -# "  The Lower 27% has $UpCnt records
". -# "The Criterion of sorting the students: ". -# "( Sum of Partial Credits Awarded / ". -# "Total Number of Tries )". - + ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]
'. + ' Dis.F. : Discrimination Factor: A Standard for '. + 'evaluating the problem according to a Criterion
'. + ' [Applied Criterion in %27 Upper Students - '. + 'Applied the same Criterion in %27 Lower Students]
'. + ' 1st Criterion for Sorting the Students: '. + 'Sum of Partial Credit Awarded / Total Number of Tries
'. + ' 2nd Criterion for Sorting the Students: '. + 'Total number of Correct Answers / Total Number of Tries'. ''; $r->print($Ptr); @@ -563,8 +558,6 @@ sub ExtractStudentData { # $DisF .= '+'.$TempHash{"$part.Time"}; $TimeTot += $TempHash{"$part.Time"}; $Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes; - - #$r->print('
'.$DisFactor,'###',$DiscFac{$DisFactor}); $ptr .= ":$TempHash{$part.'.Tries'}". ":$TempHash{$part.'.Wrongs'}". ":$TempHash{$part.'.Code'}"; @@ -584,7 +577,6 @@ sub ExtractStudentData { my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0; my $DisFactor = sprintf( "%.4f", $DisFac ); $DiscFac{$DisFactor}=$Dis; - #$r->print('
'.$DisFactor,'###',$DiscFac{$DisFactor}); #my $time; #if ($ProbSolved){ #$time = int(($TimeTot/$ProbSolved)-10000000); @@ -811,14 +803,12 @@ ENDPOP } #--------------------- Compute the Discrimination Factors - my ($UpD,$UpNo)=split(/\:/,$DisUp{$lpr[$i]}); - my ($LwD,$LwNo)=split(/\:/,$DisLow{$lpr[$i]}); - $UpNo = ($UpNo) ? $UpNo : 0; - $LwNo = ($LwNo) ? $LwNo : 0; - my $U_D = sprintf("%.2f", $UpD); - my $L_D = sprintf("%.2f", $LwD); - my $DisFac = $UpD - $LwD; - my $_Dis = sprintf("%.2f", $DisFac); + my ($Up1,$Up2)=split(/\:/,$DisUp{$lpr[$i]}); + my ($Lw1,$Lw2)=split(/\:/,$DisLow{$lpr[$i]}); + my $Dis1 = $Up1 - $Lw1; + my $Dis2 = $Up2 - $Lw2; + my $_D1 = sprintf("%.2f", $Dis1); + my $_D2 = sprintf("%.2f", $Dis2); #----------------- Some restition in presenting the float numbers my $Avg = sprintf( "%.2f", $Average ); @@ -829,8 +819,7 @@ ENDPOP my $join = $PrOrd.':'.$Temp.':'.$StdNo.':'. $TotalTries.':'.$MxTries.':'.$Avg.':'. $YES.':'.$Override.':'.$Wrng.':'.$DoD.':'. - $SD.':'.$Sk.':'.$_Dis.':'.$U_D.':'. - $L_D.':'.$UpNo.':'.$LwNo.':'.$Prob; + $SD.':'.$Sk.':'.$_D1.':'.$_D2.':'.$Prob; $CachData{($p_count-1)}=$join; $urlres=~/^(\w+)\/(\w+)/; @@ -899,11 +888,10 @@ sub Cache_Statistics { sub TableRow { my ($Str,$Idx,$RealIdx)=@_; my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES, - $Override,$Wrng,$DoD,$SD,$Sk,$_Dis,$U_D,$L_D,$UpNo,$LwNo, - $Prob)=split(/\:/,$Str); + $Override,$Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\:/,$Str); $r->print( "\n".''. "\n".''.($RealIdx+1).''. - "\n".''.$Temp.''. + "\n".''.$Temp.''. "\n".' '.$StdNo.''. "\n".''.$TotalTries.''. "\n".''.$MxTries.''. @@ -914,11 +902,8 @@ sub TableRow { "\n".''.$DoD.''. "\n".' '.$SD.''. "\n".' '.$Sk.''. - "\n".' '.$_Dis.''. - "\n".' '.$U_D.''. - "\n".' '.$L_D.''. - "\n".' '.$UpNo.''. - "\n".' '.$LwNo.''. + "\n".' '.$_D1.''. + "\n".' '.$_D2.''. "\n".'' ); $GraphDat{$RealIdx}=$DoD.':'.$Wrng; } @@ -1022,7 +1007,6 @@ sub ClassList { $name=&Apache::lonnet::unescape($name); $students[$thisindex]=$name; my ($sname,$sdom)=split(/\:/,$name); - #my %reply=&Apache::lonnet::idrget($sdom,$sname); #my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname. # ':environment:lastname&generation&firstname&middlename', @@ -1031,7 +1015,6 @@ sub ClassList { if ($ssec==-1) {next;} $ssec=($ssec) ? $ssec : '(none)'; #$ssec=(int($ssec)) ? int($ssec) : $ssec; - #$r->print($sname.'...'.$ssec.'
'); $section{$ssec}=$ssec; if ($CurSec eq 'All Sections' || $ssec eq $CurSec) { $students[$StudNo]=$name; @@ -1048,18 +1031,11 @@ sub ClassList { $r->rflush(); # --------------- Find all assessments and put them into some linear-like order &tracetable($firstres,'&'.$lastres.'&'); - # my $c=0; # foreach (sort keys %mapsort) { # $r->print('
'.$c.')'.$_.' ... '.$mapsort{$_}); # $c++; # } -#foreach(@cols) { -# $c++; -# $r->print('
'.$cols[$c]); -#} -#$r->print('
Count = '.$c); - } # ------------------------------------------------------------- End render page @@ -1148,20 +1124,11 @@ sub StudentOptions { } sub GetStatus { - -# $OpSelDis1=''; -# $OpSelDis2=''; $OpSel1=''; $OpSel2=''; $OpSel3=''; $OpSel4=''; -# if ( $ENV{'form.DisType'} eq 'Total Number of Correct Answers' ) { -# $OpSelDis1='selected'; -# $CurDis=0; -# } -# else { $OpSel2 = 'selected'; $CurDis = 1;} - if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; } else { $OpSel1 = 'selected'; }