1 First of all, we need to grasp the core line of the topic, focusing on distribution and numerical characteristics, mainly including the characteristics of one-dimensional and two-dimensional random variables and their functions, the distribution and numerical characteristics of point estimation and statistics, and scientifically review three types of test sites;

2. Secondly, it is necessary to grasp the characteristics of probability and statistics propositions, and the key contents mainly include comprehensive high numbers, classified discussion, combination of numbers and shapes, opposition to positive difficulties and investigation of probabilistic thinking, so it is necessary to focus on these five types of contents and methods;

3. Finally, it is suggested to spend some time reviewing probability theory and mathematical statistics. The outline requires understanding the concepts of indefinite integral and original function, mastering the formula and integration method of indefinite integral, including the basic theorem of calculus and the application of generalized integral, so it needs systematic review.