MDL-41756 (2) quiz statistics : break down question stats by variant

mod/quiz/report/statistics/lang/en/quiz_statistics.php

@@ -66,6 +66,7 @@ $string['lastattemptsavg'] = 'Average grade of last attempts';
 $string['lastcalculated'] = 'Last calculated {$a->lastcalculated} ago there have been {$a->count} attempts since then.';
 $string['median'] = 'Median grade (for {$a})';
 $string['modelresponse'] = 'Model response';
+$string['nameforvariant'] = 'Variant {$a->variant} of {$a->name}';
 $string['negcovar'] = 'Negative covariance of grade with total attempt grade';
 $string['negcovar_help'] = 'This question\'s grade for this set of attempts on the quiz varies in an opposite way to the overall attempt grade. This means overall attempt grade tends to be below average when the grade for this question is above average and vice-versa.
 

mod/quiz/report/statistics/report.php

@@ -412,6 +412,12 @@ class quiz_statistics_report extends quiz_default_report {
         foreach ($questionstats as $questionstat) {
             // Output the data for these question statistics.
             $this->table->add_data_keyed($this->table->format_row($questionstat));
+            if (count($questionstat->variantstats) > 1) {
+                ksort($questionstat->variantstats);
+                foreach ($questionstat->variantstats as $variantstat) {
+                    $this->table->add_data_keyed($this->table->format_row($variantstat));
+                }
+            }
 
             if (empty($questionstat->subquestions)) {
                 continue;
@@ -419,9 +425,21 @@ class quiz_statistics_report extends quiz_default_report {
 
             // And its subquestions, if it has any.
             $subitemstodisplay = explode(',', $questionstat->subquestions);
+            $displayorder = 1;
             foreach ($subitemstodisplay as $subitemid) {
                 $subquestionstats[$subitemid]->maxmark = $questionstat->maxmark;
+                $subquestionstats[$subitemid]->subqdisplayorder = $displayorder;
+                $subquestionstats[$subitemid]->question->number = $questionstat->question->number;
                 $this->table->add_data_keyed($this->table->format_row($subquestionstats[$subitemid]));
+                if (count($subquestionstats[$subitemid]->variantstats) > 1) {
+                    ksort($subquestionstats[$subitemid]->variantstats);
+                    foreach ($subquestionstats[$subitemid]->variantstats as $variantstat) {
+                        $variantstat->subqdisplayorder = $displayorder;
+                        $variantstat->question->number = $questionstat->question->number;
+                        $this->table->add_data_keyed($this->table->format_row($variantstat));
+                    }
+                }
+                $displayorder++;
             }
         }
 

mod/quiz/report/statistics/statistics_table.php

@@ -136,11 +136,17 @@ class quiz_statistics_table extends flexible_table {
      * @return string contents of this table cell.
      */
     protected function col_number($questionstat) {
+        $number = $questionstat->question->number;
+
         if ($questionstat->subquestion) {
-            return '';
+            $number = $number . '.'.$questionstat->subqdisplayorder;
         }
 
-        return $questionstat->question->number;
+        if ($questionstat->question->qtype != 'random' && !is_null($questionstat->variant)) {
+            $number = $number . '.'.$questionstat->variant;
+        }
+
+        return $number;
     }
 
     /**
@@ -180,6 +186,13 @@ class quiz_statistics_table extends flexible_table {
     protected function col_name($questionstat) {
         $name = $questionstat->question->name;
 
+        if (!is_null($questionstat->variant)) {
+            $a = new stdClass();
+            $a->name = $name;
+            $a->variant = $questionstat->variant;
+            $name = get_string('nameforvariant', 'quiz_statistics', $a);
+        }
+
         if ($this->is_downloading()) {
             return $name;
         }

mod/quiz/report/statistics/tests/fixtures/mdl_question_states.csv

@@ -1,441 +1,441 @@
-id,sumgrades,questionid,slot,maxmark,mark
-39872,12,1,1,1,0
-39873,12,2,2,1,0
-39874,12,3,3,1,0
-39875,12,4,4,1,0
-39896,12,5,5,0,0
-39897,12,6,6,0,0
-39898,12,7,7,0,0
-39899,12,8,8,8,5.5
-39900,12,14,9,1,0.3
-39901,12,15,10,1,0.9
-39902,12,16,11,1,1
-39903,12,17,12,1,0.3
-39910,12,18,19,1,0
-39911,12,19,20,1,1
-39908,12,20,17,1,1
-39909,12,21,18,1,0
-39905,12,22,14,1,0
-39906,12,23,15,1,0
-39907,12,24,16,1,1
-39904,12,25,13,1,1
-39992,7.4,1,1,1,0
-39993,7.4,2,2,1,0
-39994,7.4,3,3,1,0
-39995,7.4,4,4,1,0
-40016,7.4,5,5,0,0
-40017,7.4,6,6,0,0
-40018,7.4,7,7,0,0
-40019,7.4,8,8,8,1
-40020,7.4,14,9,1,0.9
-40021,7.4,15,10,1,0.9
-40022,7.4,16,11,1,0.3
-40023,7.4,17,12,1,0.3
-40030,7.4,18,19,1,0
-40031,7.4,19,20,1,1
-40028,7.4,20,17,1,0
-40029,7.4,21,18,1,1
-40025,7.4,22,14,1,0
-40026,7.4,23,15,1,0
-40027,7.4,24,16,1,1
-40024,7.4,25,13,1,1
-40032,11.7,1,1,1,0
-40033,11.7,2,2,1,0
-40034,11.7,3,3,1,0
-40035,11.7,4,4,1,0
-40056,11.7,5,5,0,0
-40057,11.7,6,6,0,0
-40058,11.7,7,7,0,0
-40059,11.7,8,8,8,2.5
-40060,11.7,14,9,1,1
-40061,11.7,15,10,1,0.9
-40062,11.7,16,11,1,0.3
-40063,11.7,17,12,1,1
-40070,11.7,18,19,1,1
-40071,11.7,19,20,1,1
-40068,11.7,20,17,1,1
-40069,11.7,21,18,1,1
-40065,11.7,22,14,1,0
-40066,11.7,23,15,1,1
-40067,11.7,24,16,1,1
-40064,11.7,25,13,1,0
-39352,8.5,1,1,1,0
-39353,8.5,2,2,1,0
-39354,8.5,3,3,1,0
-39355,8.5,4,4,1,0
-39376,8.5,5,5,0,0
-39377,8.5,6,6,0,0
-39378,8.5,7,7,0,0
-39379,8.5,8,8,8,4
-39380,8.5,14,9,1,0.3
-39381,8.5,15,10,1,0.9
-39382,8.5,16,11,1,1
-39383,8.5,17,12,1,0.3
-39390,8.5,18,19,1,0
-39391,8.5,19,20,1,1
-39388,8.5,20,17,1,1
-39389,8.5,21,18,1,0
-39385,8.5,22,14,1,0
-39386,8.5,23,15,1,0
-39387,8.5,24,16,1,0
-39384,8.5,25,13,1,0
-37112,10.1,1,1,1,0
-37113,10.1,2,2,1,0
-37114,10.1,3,3,1,0
-37115,10.1,4,4,1,0
-37136,10.1,5,5,0,0
-37137,10.1,6,6,0,0
-37138,10.1,7,7,0,0
-37139,10.1,8,8,8,3
-37140,10.1,14,9,1,0.9
-37141,10.1,15,10,1,0.3
-37142,10.1,16,11,1,0.9
-37143,10.1,17,12,1,1
-37150,10.1,18,19,1,1
-37151,10.1,19,20,1,0
-37148,10.1,20,17,1,1
-37149,10.1,21,18,1,1
-37145,10.1,22,14,1,1
-37146,10.1,23,15,1,0
-37147,10.1,24,16,1,0
-37144,10.1,25,13,1,0
-37432,11.3,1,1,1,0
-37433,11.3,2,2,1,0
-37434,11.3,3,3,1,0
-37435,11.3,4,4,1,0
-37456,11.3,5,5,0,0
-37457,11.3,6,6,0,0
-37458,11.3,7,7,0,0
-37459,11.3,8,8,8,4.5
-37460,11.3,14,9,1,0.9
-37461,11.3,15,10,1,1
-37462,11.3,16,11,1,1
-37463,11.3,17,12,1,0.9
-37470,11.3,18,19,1,0
-37471,11.3,19,20,1,0
-37468,11.3,20,17,1,0
-37469,11.3,21,18,1,0
-37465,11.3,22,14,1,1
-37466,11.3,23,15,1,1
-37467,11.3,24,16,1,1
-37464,11.3,25,13,1,0
-37472,11.2,1,1,1,0
-37473,11.2,2,2,1,0
-37474,11.2,3,3,1,0
-37475,11.2,4,4,1,0
-37496,11.2,5,5,0,0
-37497,11.2,6,6,0,0
-37498,11.2,7,7,0,0
-37499,11.2,8,8,8,3
-37500,11.2,14,9,1,0.3
-37501,11.2,15,10,1,0.3
-37502,11.2,16,11,1,0.3
-37503,11.2,17,12,1,0.3
-37510,11.2,18,19,1,1
-37511,11.2,19,20,1,1
-37508,11.2,20,17,1,1
-37509,11.2,21,18,1,1
-37505,11.2,22,14,1,0
-37506,11.2,23,15,1,1
-37507,11.2,24,16,1,1
-37504,11.2,25,13,1,1
-37632,14.1,1,1,1,0
-37633,14.1,2,2,1,0
-37634,14.1,3,3,1,0
-37635,14.1,4,4,1,0
-37656,14.1,5,5,0,0
-37657,14.1,6,6,0,0
-37658,14.1,7,7,0,0
-37659,14.1,8,8,8,6
-37660,14.1,14,9,1,0.9
-37661,14.1,15,10,1,0.9
-37662,14.1,16,11,1,1
-37663,14.1,17,12,1,0.3
-37670,14.1,18,19,1,0
-37671,14.1,19,20,1,1
-37668,14.1,20,17,1,1
-37669,14.1,21,18,1,0
-37665,14.1,22,14,1,1
-37666,14.1,23,15,1,1
-37667,14.1,24,16,1,1
-37664,14.1,25,13,1,0
-37672,8.6,1,1,1,0
-37673,8.6,2,2,1,0
-37674,8.6,3,3,1,0
-37675,8.6,4,4,1,0
-37696,8.6,5,5,0,0
-37697,8.6,6,6,0,0
-37698,8.6,7,7,0,0
-37699,8.6,8,8,8,0.5
-37700,8.6,14,9,1,0.9
-37701,8.6,15,10,1,1
-37702,8.6,16,11,1,0.9
-37703,8.6,17,12,1,0.3
-37710,8.6,18,19,1,0
-37711,8.6,19,20,1,1
-37708,8.6,20,17,1,1
-37709,8.6,21,18,1,1
-37705,8.6,22,14,1,1
-37706,8.6,23,15,1,1
-37707,8.6,24,16,1,0
-37704,8.6,25,13,1,0
-37712,11.6,1,1,1,0
-37713,11.6,2,2,1,0
-37714,11.6,3,3,1,0
-37715,11.6,4,4,1,0
-37736,11.6,5,5,0,0
-37737,11.6,6,6,0,0
-37738,11.6,7,7,0,0
-37739,11.6,8,8,8,5.5
-37740,11.6,14,9,1,0.9
-37741,11.6,15,10,1,1
-37742,11.6,16,11,1,0.9
-37743,11.6,17,12,1,0.3
-37750,11.6,18,19,1,0
-37751,11.6,19,20,1,0
-37748,11.6,20,17,1,1
-37749,11.6,21,18,1,0
-37745,11.6,22,14,1,1
-37746,11.6,23,15,1,0
-37747,11.6,24,16,1,0
-37744,11.6,25,13,1,1
-38072,9.3,1,1,1,0
-38073,9.3,2,2,1,0
-38074,9.3,3,3,1,0
-38075,9.3,4,4,1,0
-38096,9.3,5,5,0,0
-38097,9.3,6,6,0,0
-38098,9.3,7,7,0,0
-38099,9.3,8,8,8,2.5
-38100,9.3,14,9,1,0.9
-38101,9.3,15,10,1,1
-38102,9.3,16,11,1,1
-38103,9.3,17,12,1,0.9
-38110,9.3,18,19,1,0
-38111,9.3,19,20,1,1
-38108,9.3,20,17,1,1
-38109,9.3,21,18,1,0
-38105,9.3,22,14,1,1
-38106,9.3,23,15,1,0
-38107,9.3,24,16,1,0
-38104,9.3,25,13,1,0
-38232,13.1,1,1,1,0
-38233,13.1,2,2,1,0
-38234,13.1,3,3,1,0
-38235,13.1,4,4,1,0
-38256,13.1,5,5,0,0
-38257,13.1,6,6,0,0
-38258,13.1,7,7,0,0
-38259,13.1,8,8,8,4
-38260,13.1,14,9,1,0.9
-38261,13.1,15,10,1,0.3
-38262,13.1,16,11,1,0.9
-38263,13.1,17,12,1,1
-38270,13.1,18,19,1,0
-38271,13.1,19,20,1,1
-38268,13.1,20,17,1,1
-38269,13.1,21,18,1,1
-38265,13.1,22,14,1,1
-38266,13.1,23,15,1,1
-38267,13.1,24,16,1,1
-38264,13.1,25,13,1,0
-38272,11.5,1,1,1,0
-38273,11.5,2,2,1,0
-38274,11.5,3,3,1,0
-38275,11.5,4,4,1,0
-38296,11.5,5,5,0,0
-38297,11.5,6,6,0,0
-38298,11.5,7,7,0,0
-38299,11.5,8,8,8,4
-38300,11.5,14,9,1,0.9
-38301,11.5,15,10,1,0.3
-38302,11.5,16,11,1,0.3
-38303,11.5,17,12,1,1
-38310,11.5,18,19,1,1
-38311,11.5,19,20,1,0
-38308,11.5,20,17,1,0
-38309,11.5,21,18,1,1
-38305,11.5,22,14,1,1
-38306,11.5,23,15,1,1
-38307,11.5,24,16,1,0
-38304,11.5,25,13,1,1
-38472,11.3,1,1,1,0
-38473,11.3,2,2,1,0
-38474,11.3,3,3,1,0
-38475,11.3,4,4,1,0
-38496,11.3,5,5,0,0
-38497,11.3,6,6,0,0
-38498,11.3,7,7,0,0
-38499,11.3,8,8,8,3
-38500,11.3,14,9,1,1
-38501,11.3,15,10,1,1
-38502,11.3,16,11,1,0.3
-38503,11.3,17,12,1,1
-38510,11.3,18,19,1,1
-38511,11.3,19,20,1,0
-38508,11.3,20,17,1,1
-38509,11.3,21,18,1,1
-38505,11.3,22,14,1,1
-38506,11.3,23,15,1,0
-38507,11.3,24,16,1,1
-38504,11.3,25,13,1,0
-38632,5.5,1,1,1,0
-38633,5.5,2,2,1,0
-38634,5.5,3,3,1,0
-38635,5.5,4,4,1,0
-38656,5.5,5,5,0,0
-38657,5.5,6,6,0,0
-38658,5.5,7,7,0,0
-38659,5.5,8,8,8,1
-38660,5.5,14,9,1,1
-38661,5.5,15,10,1,0.9
-38662,5.5,16,11,1,0.3
-38663,5.5,17,12,1,0.3
-38670,5.5,18,19,1,0
-38671,5.5,19,20,1,0
-38668,5.5,20,17,1,0
-38669,5.5,21,18,1,0
-38665,5.5,22,14,1,0
-38666,5.5,23,15,1,1
-38667,5.5,24,16,1,0
-38664,5.5,25,13,1,1
-38672,4.8,1,1,1,0
-38673,4.8,2,2,1,0
-38674,4.8,3,3,1,0
-38675,4.8,4,4,1,0
-38696,4.8,5,5,0,0
-38697,4.8,6,6,0,0
-38698,4.8,7,7,0,0
-38699,4.8,8,8,8,1
-38700,4.8,14,9,1,0.3
-38701,4.8,15,10,1,0.3
-38702,4.8,16,11,1,0.3
-38703,4.8,17,12,1,0.9
-38710,4.8,18,19,1,0
-38711,4.8,19,20,1,1
-38708,4.8,20,17,1,0
-38709,4.8,21,18,1,0
-38705,4.8,22,14,1,0
-38706,4.8,23,15,1,0
-38707,4.8,24,16,1,1
-38704,4.8,25,13,1,0
-38992,8.7,1,1,1,0
-38993,8.7,2,2,1,0
-38994,8.7,3,3,1,0
-38995,8.7,4,4,1,0
-39016,8.7,5,5,0,0
-39017,8.7,6,6,0,0
-39018,8.7,7,7,0,0
-39019,8.7,8,8,8,1.5
-39020,8.7,14,9,1,1
-39021,8.7,15,10,1,0.3
-39022,8.7,16,11,1,0.9
-39023,8.7,17,12,1,1
-39030,8.7,18,19,1,0
-39031,8.7,19,20,1,0
-39028,8.7,20,17,1,1
-39029,8.7,21,18,1,0
-39025,8.7,22,14,1,1
-39026,8.7,23,15,1,0
-39027,8.7,24,16,1,1
-39024,8.7,25,13,1,1
-39032,11.8,1,1,1,0
-39033,11.8,2,2,1,0
-39034,11.8,3,3,1,0
-39035,11.8,4,4,1,0
-39056,11.8,5,5,0,0
-39057,11.8,6,6,0,0
-39058,11.8,7,7,0,0
-39059,11.8,8,8,8,4
-39060,11.8,14,9,1,0.9
-39061,11.8,15,10,1,1
-39062,11.8,16,11,1,0.9
-39063,11.8,17,12,1,1
-39070,11.8,18,19,1,0
-39071,11.8,19,20,1,0
-39068,11.8,20,17,1,0
-39069,11.8,21,18,1,1
-39065,11.8,22,14,1,1
-39066,11.8,23,15,1,1
-39067,11.8,24,16,1,1
-39064,11.8,25,13,1,0
-39272,6,1,1,1,0
-39273,6,2,2,1,0
-39274,6,3,3,1,0
-39275,6,4,4,1,0
-39296,6,5,5,0,0
-39297,6,6,6,0,0
-39298,6,7,7,0,0
-39299,6,8,8,8,2
-39300,6,14,9,1,0.9
-39301,6,15,10,1,0.9
-39302,6,16,11,1,0.3
-39303,6,17,12,1,0.9
-39310,6,18,19,1,0
-39311,6,19,20,1,0
-39308,6,20,17,1,0
-39309,6,21,18,1,0
-39305,6,22,14,1,1
-39306,6,23,15,1,0
-39307,6,24,16,1,0
-39304,6,25,13,1,0
-36192,5.9,1,1,1,0
-36193,5.9,2,2,1,0
-36194,5.9,3,3,1,0
-36195,5.9,4,4,1,0
-36216,5.9,5,5,0,0
-36217,5.9,6,6,0,0
-36218,5.9,7,7,0,0
-36219,5.9,8,8,8,1
-36220,5.9,14,9,1,1
-36221,5.9,15,10,1,0.3
-36222,5.9,16,11,1,0.3
-36223,5.9,17,12,1,0.3
-36230,5.9,18,19,1,0
-36231,5.9,19,20,1,0
-36228,5.9,20,17,1,1
-36229,5.9,21,18,1,0
-36225,5.9,22,14,1,1
-36226,5.9,23,15,1,1
-36227,5.9,24,16,1,0
-36224,5.9,25,13,1,0
-36352,12.8,1,1,1,0
-36353,12.8,2,2,1,0
-36354,12.8,3,3,1,0
-36355,12.8,4,4,1,0
-36376,12.8,5,5,0,0
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+36229,5.9,21,18,1,0,1
+36225,5.9,22,14,1,1,1
+36226,5.9,23,15,1,1,1
+36227,5.9,24,16,1,0,1
+36224,5.9,25,13,1,0,1
+36352,12.8,1,1,1,0,1
+36353,12.8,2,2,1,0,1
+36354,12.8,3,3,1,0,1
+36355,12.8,4,4,1,0,1
+36376,12.8,5,5,0,0,1
+36377,12.8,6,6,0,0,1
+36378,12.8,7,7,0,0,1
+36379,12.8,8,8,8,6,1
+36380,12.8,14,9,1,0.9,1
+36381,12.8,15,10,1,1,1
+36382,12.8,16,11,1,1,1
+36383,12.8,17,12,1,0.9,1
+36390,12.8,18,19,1,1,1
+36391,12.8,19,20,1,1,1
+36388,12.8,20,17,1,0,1
+36389,12.8,21,18,1,0,1
+36385,12.8,22,14,1,0,1
+36386,12.8,23,15,1,0,1
+36387,12.8,24,16,1,1,1
+36384,12.8,25,13,1,0,1
+36832,13.8,1,1,1,0,1
+36833,13.8,2,2,1,0,1
+36834,13.8,3,3,1,0,1
+36835,13.8,4,4,1,0,1
+36856,13.8,5,5,0,0,1
+36857,13.8,6,6,0,0,1
+36858,13.8,7,7,0,0,1
+36859,13.8,8,8,8,7,1
+36860,13.8,14,9,1,0.9,1
+36861,13.8,15,10,1,0.3,1
+36862,13.8,16,11,1,0.3,1
+36863,13.8,17,12,1,0.3,1
+36870,13.8,18,19,1,0,1
+36871,13.8,19,20,1,0,1
+36868,13.8,20,17,1,1,1
+36869,13.8,21,18,1,1,1
+36865,13.8,22,14,1,0,1
+36866,13.8,23,15,1,1,1
+36867,13.8,24,16,1,1,1
+36864,13.8,25,13,1,1,1

mod/quiz/report/statistics/tests/statistics_test.php

@@ -130,10 +130,10 @@ class quiz_statistics_question_stats_testcase extends basic_testcase {
         foreach ($this->qstats as $qstat) {
             $value = array_shift($values);
             if ($value !== null) {
-                $this->assertEquals($qstat->{$fieldname} * $multiplier,
-                    $value, '', 1E-6);
+                $this->assertEquals($value, $qstat->{$fieldname} * $multiplier,
+                    '', 1E-6);
             } else {
-                $this->assertEquals($qstat->{$fieldname} * $multiplier, $value);
+                $this->assertEquals($value, $qstat->{$fieldname} * $multiplier);
             }
         }
     }