[LON-CAPA-cvs] cvs: modules /gerd/discussions studeval.pl /gerd/discussions/paper discussions.tex

[www]

www		Wed Apr 13 17:51:43 2005 EDT

  Modified files:              
    /modules/gerd/discussions	studeval.pl 
    /modules/gerd/discussions/paper	discussions.tex 
  Log:
  grades
  
  
Index: modules/gerd/discussions/studeval.pl
diff -u modules/gerd/discussions/studeval.pl:1.4 modules/gerd/discussions/studeval.pl:1.5
--- modules/gerd/discussions/studeval.pl:1.4	Wed Apr 13 17:30:01 2005
+++ modules/gerd/discussions/studeval.pl	Wed Apr 13 17:51:43 2005
@@ -38,6 +38,8 @@
     print "\nReading $class";
     open(IN,'raw/'.$class.'.csv');
     my $num=0;
+    my $nummen=0;
+    my $numwomen=0;
     my $numdisc=0;
     while (my $line=<IN>) {
         my $thisnumdisc=0;
@@ -50,6 +52,8 @@
 	    }
 	}
         $num++;
+        if ($entries[1] eq 'm') { $nummen++; }
+        if ($entries[1] eq 'f') { $numwomen++; }
         my @newentry=($class,$entries[0],$entries[1]);
         for (my $i=3;$i<=34;$i++) { $newentry[$i]=0; }
         for (my $i=0;$i<length($entries[2]);$i+=2) {
@@ -63,7 +67,7 @@
         push @q,join(',',@newentry);
     }
     close(IN);
-    print "\n$class: $num students, $numdisc discussion items\n";
+    print "\n$class: $num students ($nummen men, $numwomen women), $numdisc discussion items\n";
 }
 print "\nReading done.\n";
 
@@ -88,6 +92,8 @@
 	&callabssums('sumall&all',$error,@entries);
 	&callabssums('sumall&gender'.$entries[$gender],$error,@entries);
 	&callabssums('sumall&grade'.$entries[$grade],$error,@entries);
+	&callabssums('grade&all',$error,@entries);
+	&callabssums('grade&gender'.$entries[$gender],$error,@entries);
 #
 	&callsums('emotion&grade'.$entries[$grade],$error,@entries);
 	&callsums('conceptual&grade'.$entries[$grade],$error,@entries);
@@ -122,6 +128,11 @@
 print "\nAve number postings female: ".&reportoutabs('sumall&genderf');
 print "\n\n===\n";
 
+print "\nAve grade: ".&reportoutabs('grade&all');
+print "\nAve grade male: ".&reportoutabs('grade&genderm');
+print "\nAve grade female: ".&reportoutabs('grade&genderf');
+print "\n\n===\n";
+
 # By grade all
 print "\n By grade, sumall";
 for (my $i=0;$i<=4;$i+=.5) {
@@ -304,6 +315,11 @@
     return $entries[$sumall];
 }
 
+sub grade {
+    my @entries=@_;
+    return $entries[$grade];
+}
+
 sub solution {
    my @entries=@_;
    return &solution_question(@entries)
Index: modules/gerd/discussions/paper/discussions.tex
diff -u modules/gerd/discussions/paper/discussions.tex:1.9 modules/gerd/discussions/paper/discussions.tex:1.10
--- modules/gerd/discussions/paper/discussions.tex:1.9	Wed Apr 13 17:20:20 2005
+++ modules/gerd/discussions/paper/discussions.tex	Wed Apr 13 17:51:43 2005
@@ -81,7 +81,7 @@
 as well as 215 problems with 1078 discussion contributions and 148 problems with 949 
 discussion contributions in the first and second semester of the calculus-based course, respectively. 
 
-In addition, within the first semester calculus-based course (enrollment: 211 students), discussions were analyzed by student.
+In addition, within the first semester calculus-based course (enrollment: 211 students (82 men, 129 women)), discussions were analyzed by student.
 \section{\label{sec:method}Methodology}
 
 \subsection{\label{subsec:problemcat}Problem Classification}
@@ -265,11 +265,12 @@
 Within the first semester calculus-based course, an analysis by student was performed. Out of the 211 students in the course,
 138 students (65 percent) contributed at least one discussion posting over the course of the semester. 
 It is not possible to find out which percentage students {\it read} the discussions, since they are automatically attached to the questions.
-The average number of postings per student was $5\pm0.7$. Women had a significantly higher number of average postings than men,
-namely $5.9\pm1$ for women versus $3.7\pm0.7$ for men.
+The average number of postings per student was $5\pm0.7$. Women had a significantly higher average number of postings than men:
+each female student contributed an average of $5.9\pm1$ postings, while each male student contributed an average of $3.7\pm0.7$ postings.
 
+The average grade in the course was $3.21\pm0.05$, with men and women achieving equally high grades (men: $3.29\pm0.08$; women: $3.17\pm0.05$). 
 No correlation could be found between the average number of discussion postings and the grade in the course --- in terms of absolute 
-numbers, within statistical errors, students with high and low grades in the course participate equally in the discussions.
+numbers, within statistical errors, students with high and low grades in the course participated equally in the discussions.
 
 Significant differences appear when considering the classes of discussions.