.

anatomy/models.py

@@ -468,6 +468,12 @@ class CidUserAnswer(models.Model):
     #     s = s.translate(str.maketrans('', '', string.punctuation))
     #     return s
 
+    def get_blank_answer(self):
+        return 0
+
+    def get_blank_answer_string(self):
+        return ""
+
     def get_answer_score(self, cached=True):
         if cached and self.score:
             if self.score == Answer.MarkOptions.CORRECT:

generic/views.py

@@ -896,6 +896,8 @@ class ExamViews(View, LoginRequiredMixin):
 
         user_scores_list = list(user_scores.values())
 
+        max_score = len(questions) * 2
+
         if len(user_scores_list) < 1:
             mean = 0
             median = 0
@@ -920,20 +922,20 @@ class ExamViews(View, LoginRequiredMixin):
             )
             fig_html = fig.to_html()
 
-        max_score = len(questions) * 2
+            exam.stats_mean = mean
+            exam.stats_median = median
+            exam.stats_mode = mode
 
-        exam.stats_mean = mean
-        exam.stats_median = median
-        exam.stats_mode = mode
+            exam.stats_candidates = len(user_scores_list)
+            exam.stats_max_possible = max_score
 
-        exam.stats_candidates = len(user_scores_list)
-        exam.stats_max_possible = max_score
+            exam.stats_min = min(user_scores_list)
+            exam.stats_max = max(user_scores_list)
+
+            exam.stats_graph = fig_html
+            exam.save()
 
-        exam.stats_min = min(user_scores_list)
-        exam.stats_max = max(user_scores_list)
 
-        exam.stats_graph = fig_html
-        exam.save()
 
         return render(
             request,