EC's????

<p>I know that your supposed to only list your EC's that you have been active in , but whats the average number of EC's you guys have seen for students applying to schools such as Vanderbilt, Emory, Rice, Northwestern, etc.? Im asking this because Im active in like ~10 clubs/organization but i havent listed some of them on my resume.
Also do you think i should list my small volunteering activities (like places where i volunteered for 20 hours)?</p>