Using STADS from university or gymnasium you could be using their grading tools STADS at https://yourschool.com/prod/sb/index.jsp but the result statistic graph is gone. Type your username and password following pressing the login button.
Then press the Grade Results
Select the course you want your grades statistic from and it will open a popup
Copy the URL and replace the “studredetaljer.jsp” with “visStatistik.jsp”. These can be different from university to university. So investigate what your url should be. Be aware that there a minimum off 100 given grades before you’re allowed to see the statistics.