MDL-16952 "after DB field type changes standard deviation and facility index show...

diff --git a/mod/quiz/report/statistics/qstats.php b/mod/quiz/report/statistics/qstats.php
index 7935df3f8543b57297ba7d91dc48cbf5cf41f35f..4f00b88223ef0286cc0156fd52a336a5d117c205 100644 (file)
--- a/mod/quiz/report/statistics/qstats.php
+++ b/mod/quiz/report/statistics/qstats.php
@@ -135,7 +135,7 @@ class qstats{
 
     function _initial_question_walker(&$stats){
         $stats->gradeaverage = $stats->totalgrades / $stats->s;
-        if ($stats->maxgrade){
+        if ($stats->maxgrade!=0){
             $stats->facility = $stats->gradeaverage / $stats->maxgrade;
         } else {
             $stats->facility = null;

diff --git a/mod/quiz/report/statistics/statistics_table.php b/mod/quiz/report/statistics/statistics_table.php
index e4681b4393a52fee6c50f860dc404a24e3d3e2ae..694fd06d6e027c2206a5301dad124d6d4dade1f3 100644 (file)
--- a/mod/quiz/report/statistics/statistics_table.php
+++ b/mod/quiz/report/statistics/statistics_table.php
@@ -171,7 +171,7 @@ class quiz_report_statistics_table extends flexible_table {
     }
     
     function col_sd($question){
-        if (!is_null($question->_stats->sd) && $question->_stats->maxgrade){
+        if (!is_null($question->_stats->sd) && ($question->_stats->maxgrade!=0)){
             return number_format($question->_stats->sd*100 / $question->_stats->maxgrade, 2).'%';
         } else {
             return '';