Print is mostly used to print variables to a file. It could be used to print to the display, but you should give %io(2) as file argument as mentioned in the documentation. So then, your code would become:
print(%io(2), media );
Disp
The usual syntax for displaying results within Scilab is disp.
disp(media);
or
disp("Media is: " + string(media) );
Printf
You could also use the more c-style printf function as such
printf('Result is:\n media=%f',media);