MIT-Introduction to Statistical Method in Economics  ，包括lectures，exams and problem sets with solutions。
Lecture 1： Set and Probability Theory
Lecture 2：Random Variables, Probability Mass/Density Function, and Cumulative Distribution Function  (Univariate Model)
Lecture 3：Multiple Random Variables  (Multivariate Model)
Lecture 4：Expectation  (Moments)
Lecture 5：Random Variable/Vector Transformation
Lecture 6：Special Distributions  (Discrete and Continuous)
Lecture 7：Random Sample
Lecture 8：Point Estimators and Point Estimation Methods
Lecture 9：Interval Estimation and Confidence  Intervals