Fix notices.

diff --git a/mod/quiz/report/statistics/qstats.php b/mod/quiz/report/statistics/qstats.php
index 68158c418f5fc2143092bc4e0455d0b8b1f6f856..3177e2ba828b20739a9cb94be5bd41ecd83247b8 100644 (file)
--- a/mod/quiz/report/statistics/qstats.php
+++ b/mod/quiz/report/statistics/qstats.php
@@ -116,6 +116,7 @@ class qstats{
     }
     
     function process_states(){
+        $subquestionstats = array();
         foreach ($this->states as $state){
             $this->_initial_states_walker($state, $this->questions[$state->question]->_stats);
             //if this is a random question what is the real item being used?