Mark,
The code in the Configurable Reports block is based on that from the Course dedication block https://moodle.org/plugins/block_dedication and so uses the same methods of calculating.
The answers in detail to your questions will be found through that plugin page and its related support forum, but basically the data is calculated from the Moodle logs (located usually in mdl_logstore_standard_log table). The CR module code is located in /components/columns/userstats/plugin.class.php if you want to see _exactly_ what it does.
Randy
The code in the Configurable Reports block is based on that from the Course dedication block https://moodle.org/plugins/block_dedication and so uses the same methods of calculating.
The answers in detail to your questions will be found through that plugin page and its related support forum, but basically the data is calculated from the Moodle logs (located usually in mdl_logstore_standard_log table). The CR module code is located in /components/columns/userstats/plugin.class.php if you want to see _exactly_ what it does.
Randy