1, mathematical statistics, a branch of mathematics. Based on probability theory, it uses statistical methods to analyze the data, and studies and deduces its conceptual regularity (statistical regularity).

2. Mathematical statistics mainly studies the relationship between parts (words) and whole (matrix) in random phenomena. And the regularity of the relationship between related factors. It is a scientific method that mainly uses the theory of calculating average, standard deviation, standard error, coefficient of variation rate, mean square, test inference, correlation, regression, cluster analysis, discriminant analysis, principal component analysis, orthogonal test, fuzzy mathematics and grey system to study the data obtained from experiments and surveys and get the required results. It requires randomness and the data must be true and reliable, which is the basis of quantitative analysis. This method can achieve the purpose of fast, accurate and large amount of calculation without the help of computer.