<p>Stat 25 only exists in course catalog, so just assume that class won’t be offered anytime soon. Stat 20 is usually for math majors and engineers who need fundamental statistics knowledge that can either be a lower-division elective or simply because it is useful for other upper-division engineering classes. Stat 21 is where all the pre-haas people are at.</p>
<p>Stat 20 might sound more intense, but you essentially learn the same material and you don’t have to deal with the unnecessary competition that I hear from Stat 21 that it is getting similar to UGBA 10.</p>