How to do average on php

Answer 1

Read operators section & arrays section
https://www.sololearn.com/Course/PHP/?ref=app

Answer 2

thanks

Answer 3

You mean arithmetic average?
Av = (n1+n2+n3+...)/(number of factors)

Answer 4

yes

Answer 5

like for example you have students marks and then you have to average the total how do one go by in php