<p>How many stat classes do you have to take to major in Econ?</p>
<p>Just stat 21</p>
<p>According to [Prospective</a> Majors](<a href=“http://emlab.berkeley.edu/econ/ugrad/prospect_prerequisites.shtml]Prospective”>http://emlab.berkeley.edu/econ/ugrad/prospect_prerequisites.shtml) , “Statistics 20, 21, 25 or an upper division statistics course (Stats 131A, 134, or IEOR 172 are acceptable)”.</p>