Who can say on what principle this rating works?

Question

Ratings

Greetings Ladies and Gentlemen. There was a need to give the program a rating, I liked this option
d130.sandev.pro/o-skripte/28-novaja-novost-poka-chto-bez-rejtinga.html
who can tell how such a thing works? What are your guesses, how does he calculate to give an integer as a final grade?

Answer 1

Arithmetic mean, I presume? with rounding