diff --git a/analytics/classes/action.php b/analytics/classes/action.php
index 93bbe870cb8..b05d513bd38 100644
--- a/analytics/classes/action.php
+++ b/analytics/classes/action.php
@@ -70,6 +70,9 @@ abstract class action {
      */
     protected $text = null;
 
+    /** @var string Store the action type. */
+    protected string $type = '';
+
     /**
      * Returns the action name.
      *
diff --git a/analytics/classes/course.php b/analytics/classes/course.php
index 6e372cfb733..7326f69638a 100644
--- a/analytics/classes/course.php
+++ b/analytics/classes/course.php
@@ -126,6 +126,9 @@ class course implements \core_analytics\analysable {
      */
     protected $ntotallogs = null;
 
+    /** @var int Store current Unix timestamp. */
+    protected int $now = 0;
+
     /**
      * Course manager constructor.
      *
diff --git a/analytics/classes/user.php b/analytics/classes/user.php
index 6dd83c73a2a..952b95ed0e7 100644
--- a/analytics/classes/user.php
+++ b/analytics/classes/user.php
@@ -64,6 +64,9 @@ class user implements \core_analytics\analysable {
      */
     protected $usercontext = null;
 
+    /** @var int Store current Unix timestamp. */
+    protected int $now = 0;
+
     /**
      * Constructor.
      *
diff --git a/analytics/tests/course_test.php b/analytics/tests/course_test.php
index d351908ae4c..bff564b4ead 100644
--- a/analytics/tests/course_test.php
+++ b/analytics/tests/course_test.php
@@ -25,6 +25,33 @@ namespace core_analytics;
  */
 class course_test extends \advanced_testcase {
 
+    /** @var \stdClass Course record. */
+    protected $course;
+
+    /** @var \stdClass Student 1 user record. */
+    protected $stu1;
+
+    /** @var \stdClass Student 2 user record. */
+    protected $stu2;
+
+    /** @var \stdClass Student both user record. */
+    protected $both;
+
+    /** @var \stdClass Editing teacher user record. */
+    protected $editingteacher;
+
+    /** @var \stdClass Teacher user record. */
+    protected $teacher;
+
+    /** @var int Student role ID record. */
+    protected $studentroleid;
+
+    /** @var int Editing teacher role ID record. */
+    protected $editingteacherroleid;
+
+    /** @var int Teacher role ID record. */
+    protected $teacherroleid;
+
     public function setUp(): void {
         global $DB;
 
diff --git a/analytics/tests/dataset_manager_test.php b/analytics/tests/dataset_manager_test.php
index 8c051117767..ab7c28a9681 100644
--- a/analytics/tests/dataset_manager_test.php
+++ b/analytics/tests/dataset_manager_test.php
@@ -25,6 +25,9 @@ namespace core_analytics;
  */
 class dataset_manager_test extends \advanced_testcase {
 
+    /** @var array Store dataset top rows. */
+    protected array $sharedtoprows = [];
+
     /**
      * setUp
      *
diff --git a/analytics/tests/model_test.php b/analytics/tests/model_test.php
index 239ff5d26d9..884ef3e610d 100644
--- a/analytics/tests/model_test.php
+++ b/analytics/tests/model_test.php
@@ -43,6 +43,12 @@ require_once(__DIR__ . '/fixtures/test_analysis.php');
  */
 class model_test extends \advanced_testcase {
 
+    /** @var model Store Model. */
+    protected $model;
+
+    /** @var \stdClass Store model object. */
+    protected $modelobj;
+
     public function setUp(): void {
 
         $this->setAdminUser();
diff --git a/analytics/tests/prediction_actions_test.php b/analytics/tests/prediction_actions_test.php
index adfd8fe19bb..005595923a9 100644
--- a/analytics/tests/prediction_actions_test.php
+++ b/analytics/tests/prediction_actions_test.php
@@ -30,6 +30,30 @@ require_once(__DIR__ . '/fixtures/test_target_shortname.php');
  */
 class prediction_actions_test extends \advanced_testcase {
 
+    /** @var model Store Model. */
+    protected $model;
+
+    /** @var \stdClass Store model object. */
+    protected $modelobj;
+
+    /** @var \stdClass Course 1 record. */
+    protected $course1;
+
+    /** @var \stdClass Course 2 record. */
+    protected $course2;
+
+    /** @var \context_course Store Model. */
+    protected $context;
+
+    /** @var \stdClass Teacher 1 user record. */
+    protected $teacher1;
+
+    /** @var \stdClass Teacher 2 user record. */
+    protected $teacher2;
+
+    /** @var \stdClass Teacher 3 user record. */
+    protected $teacher3;
+
     /**
      * Common startup tasks
      */
diff --git a/analytics/tests/privacy/provider_test.php b/analytics/tests/privacy/provider_test.php
index de9cb4dadf2..06ed516d99c 100644
--- a/analytics/tests/privacy/provider_test.php
+++ b/analytics/tests/privacy/provider_test.php
@@ -45,6 +45,48 @@ require_once(__DIR__ . '/../fixtures/test_target_course_users.php');
  */
 class provider_test extends \core_privacy\tests\provider_testcase {
 
+    /** @var \core_analytics\model Store Model 1. */
+    protected $model1;
+
+    /** @var \core_analytics\model Store Model 2. */
+    protected $model2;
+
+    /** @var \stdClass $modelobj1 Store Model 1 object. */
+    protected $modelobj1;
+
+    /** @var \stdClass $modelobj2 Store Model 2 object. */
+    protected $modelobj2;
+
+    /** @var \stdClass $u1 User 1 record. */
+    protected $u1;
+
+    /** @var \stdClass $u2 User 2 record. */
+    protected $u2;
+
+    /** @var \stdClass $u3 User 3 record. */
+    protected $u3;
+
+    /** @var \stdClass $u4 User 4 record. */
+    protected $u4;
+
+    /** @var \stdClass $u5 User 5 record. */
+    protected $u5;
+
+    /** @var \stdClass $u6 User 6 record. */
+    protected $u6;
+
+    /** @var \stdClass $u7 User 7 record. */
+    protected $u7;
+
+    /** @var \stdClass $u8 User 8 record. */
+    protected $u8;
+
+    /** @var \stdClass $c1 Course 1 record. */
+    protected $c1;
+
+    /** @var \stdClass $c2 Course 2 record. */
+    protected $c2;
+
     public function setUp(): void {
 
         $this->resetAfterTest(true);
diff --git a/analytics/tests/time_splittings_test.php b/analytics/tests/time_splittings_test.php
index 8292eca83c5..cd5026c08fe 100644
--- a/analytics/tests/time_splittings_test.php
+++ b/analytics/tests/time_splittings_test.php
@@ -35,6 +35,12 @@ require_once(__DIR__ . '/../../lib/enrollib.php');
  */
 class time_splittings_test extends \advanced_testcase {
 
+    /** @var \stdClass course record. */
+    protected $course;
+
+    /** @var course Moodle course analysable. */
+    protected $analysable;
+
     /**
      * setUp
      *