From: jamiesensei <jamiesensei>
Date: Wed, 30 Jul 2008 09:49:09 +0000 (+0000)
Subject: MDL-15268 "Content for Quiz Statistics report table" display blank cell if statistic... 
X-Git-Url: http://git.mjollnir.org/gw?a=commitdiff_plain;h=aa3133bcb99485a59170381ef94439e243eb188c;p=moodle.git

MDL-15268 "Content for Quiz Statistics report table" display blank cell if statistic is not calculatable
---

diff --git a/mod/quiz/report/statistics/statistics_table.php b/mod/quiz/report/statistics/statistics_table.php
index 366aefc1eb..e2a33acb0d 100644
--- a/mod/quiz/report/statistics/statistics_table.php
+++ b/mod/quiz/report/statistics/statistics_table.php
@@ -160,7 +160,11 @@ class quiz_report_statistics_table extends flexible_table {
     }
     
     function col_sd($question){
-        return number_format($question->_stats->sd*100 / $question->_stats->maxgrade, 2).'%';
+        if (!is_null($question->_stats->sd)){
+            return number_format($question->_stats->sd*100 / $question->_stats->maxgrade, 2).'%';
+        } else {
+            return '';
+        }
     }
     function col_s($question){
         if (isset($question->_stats->s)){