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ecastrolt
2005-06-10 18:42:29 +00:00
parent 9df3490a99
commit 101ff90760
1 changed files with 16 additions and 20 deletions
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mod/quiz/report/analysis/report.php
+16 -20
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@@ -17,7 +17,7 @@ class quiz_report extends quiz_default_report {
print_heading($strnoattempts);
return true;
}
/// Check to see if groups are being used in this quiz
if ($groupmode = groupmode($course, $cm)) { // Groups are being used
$currentgroup = setup_and_print_groups($course, $groupmode, "report.php?id=$cm->id&mode=overview");
@@ -121,13 +121,11 @@ class quiz_report extends quiz_default_report {
if (!quiz_get_question_options($quizquestions)) {
error('Could not load question options');
}
echo "estoy aqui";
// Restore the question sessions to their most recent states
// creating new sessions where required
if (!$states = quiz_restore_question_sessions($quizquestions, $quiz, $attempt)) {
error('Could not restore question sessions');
}
print_object($states);
$numbers = explode(',', $questionlist);
$statsrow = array();
foreach ($numbers as $i) {
@@ -417,16 +415,15 @@ class quiz_report extends quiz_default_report {
}
}
}
$n = count($qstats);
$sumx = array_reduce($qstats, "stats_sumx");
$sumg = $sumx->x;
$sumq = $sumx->y;
$sumx2 = array_reduce($qstats, "stats_sumx2");
$sumg2 = $sumx2->x;
$sumq2 = $sumx2->y;
$sumxy = array_reduce($qstats, "stats_sumxy");
$sumgq = $sumxy->x;
$sumx = array_reduce($qstats, "stats_sumx", array(0,0));
$sumg = $sumx[0];
$sumq = $sumx[1];
$sumx2 = array_reduce($qstats, "stats_sumx2", array(0,0));
$sumg2 = $sumx2[0];
$sumq2 = $sumx2[1];
$sumxy = array_reduce($qstats, "stats_sumxy", array(0,0));
$sumgq = $sumxy[0];
$q['count'] = $n;
$q['facility'] = $sumq/$n;
@@ -440,7 +437,7 @@ class quiz_report extends quiz_default_report {
$q['disc_index'] = ($top_scores - $bottom_scores)/max($top_count, $bottom_count, 1);
$div = $n*$gsd*$q['qsd'];
if ($div!=0) {
$q['disc_coeff'] = ($sumgq - $sumg*$sumq/$n)/($n*$gsd*$q['qsd']);
$q['disc_coeff'] = ($sumgq - $sumg*$sumq/$n)/$div;
} else {
$q['disc_coeff'] = -999;
}
@@ -649,8 +646,6 @@ class quiz_report extends quiz_default_report {
}
return $result;
}
}
define('QUIZ_ALLATTEMPTS', 0);
@@ -659,19 +654,20 @@ define('QUIZ_FIRSTATTEMPT', 2);
define('QUIZ_LASTATTEMPT', 3);
function stats_sumx($sum, $data){
$sum->x += $data[0];
$sum->y += $data[1];
$sum[0] += $data[0];
$sum[1] += $data[1];
return $sum;
}
function stats_sumx2($sum, $data){
$sum->x += $data[0]*$data[0];
$sum->y += $data[1]*$data[1];
$sum[0] += $data[0]*$data[0];
$sum[1] += $data[1]*$data[1];
return $sum;
}
function stats_sumxy($sum, $data){
$sum->x += $data[0]*$data[1];
$sum[0] += $data[0]*$data[1];
$sum[1] += $data[1]*$data[0];
return $sum;
}