Mathematics in the comprehensive ability of 396 joint entrance examination for economics mainly takes advanced mathematics, involving random variables and their common distribution, and their numerical characteristics.

This part mainly investigates the necessary and sufficient conditions for finding unknown parameters by using distribution function, distribution law and probability density function; Eight common distributions; Calculate expectation and variance by definition or formula, and solve unknown parameters by knowing the mathematical expectation and variance of random variables.

Although there are few random variable questions, the score is not high, generally no more than 5 questions.