# 18.6x

## Probability and Statistics

Many subjects at MIT require acquaintance with probability or statistics, and there are several options for gaining this expertise. The principal ones are 18.05, 6.041A+B, and 18.600. All have 18.02 as a prerequisite. Here is a brief comparison of these three subjects.

**18.05 (Introduction to Probability and Statistics)**is an elementary introduction to both probability and statistics with applications.**6.041A+6.041B (Introduction to Probability I and II)**is an introduction to probability theory, and modeling and analysis of probabilistic systems, which also includes a treatment of the elements of statistical inference.**18.600 (Probability and Random Variables)**covers a broader range of topics in probability, at greater depth than either 18.05 or 6.041A+B, and it is the probability subject of choice for most Mathematics majors. 18.650 is a companion subject on statistics, accepting either 18.600 or 6.041A+B as prerequisite.