Newbie here needs help.

Newbie here needs help.

This is my first post to this forum.  I'm pretty new to Zoho, and I've created a few forms to help track members to my group, as well as RSVP's to my group's events.  However, I can't seem to figure out how to have Zoho keep a running tally of how many "yes", "no", and "maybe" responses I collect from my form.  I found something called "iterate data in radio buttons..." (my form collects RSVP's via radio buttons) but I'm still having a hard time understanding the scripting language. 

Can anyone help?