On the contrary, I find it difficult to make up math three for students. Although there are fewer comprehensive topics, we can't grasp the key points.

I feel that the probability said by the landlord is not easy to handle. When you understand the probability, you find that the content of the exam is quite narrow. But if you only get part of it, and you are afraid of this and that, then you will completely see the person who has the problem and nothing will work.

Usually, in the number three exam, the high number is 82 points, and the line generation and probability theory are 34 points each.

Multiple choice questions account for 45% and answer questions account for 55%.

It is not difficult to test the probability of three. It is enough to master what is said on 1 floor. But if it's okay, don't let go of all the probability knowledge. Focus on the distribution of one-dimensional function, at least know the discrete and continuous distribution forms such as binomial distribution, average distribution and normal distribution, and then master the solution of density function and distribution function. Look at the two-dimensional distribution. If you master one dimension, it is not difficult to learn two dimensions. Finally, just look at the expected variance.

If the probability test is difficult, you don't need to understand it, and the formula is also very confusing:

Law of large numbers and central limit theorem, numerical characteristics, expectation, variance, covariance, correlation and independence of random variables, chi-square distribution and f, t, sample variance, parameter estimation, full probability formula and Bayesian formula, multidimensional random variables.

Remember, if the probability is vague, you can also get high marks (I'm afraid the question is too lively, but if the teacher makes the question lively, the students who study hard will lose their advantage, so don't worry, the probability is different from the high number, use your brain when the probability is simple, use your formula when the high number is simple, and use your brain when it is complicated).