我导师给推荐的，大家有兴趣看看，介绍统计学的。

(FREE) Stat2.1x: Introduction to Statistics: Descriptive Statistics

BerkeleyX

https://www.edx.org/courses/BerkeleyX/Stat2.1x/2013_Spring/about

by Professor Ani Adhikari and Professor Philip Stark

Professor Adhikari is an extraordinary teacher of statistics.
She has received Distinguished Teaching Award at Berkeley and the Dean's Award for Distinguished Teaching at Stanford University.

Professor Stark is a pioneer of on-line statistics courses
and a leading applied statistician.

They are both faculty members of the top Statistics Department at the University of Calinforia, Berkeley: