The University of California at Berkeley offers a free Introduction to Statistics. The course, taught by Fletcher Ibser, can be accessed on iTunes. The topics covered by this course include the following: "Population and variables. Standard measures of location, spread and association. Normal approximation. Regression. Probability and sampling. Binomial distribution. Interval estimation. Some standard significance tests." You can find this course, and 275 others, listed in the Mathematics Section of our large collection of Free Courses.