The two most important thinking paradigms in scientific research are "simplification" and "reduction", so-called "simplification" refers to the understanding of the world according to the less complicated and understandable laws. The so-called " reduction " means that any complex phenomenon can be explained in the final analysis by a few simple mechanisms. All kinds of statistical distribution families are the result of "simplifying" thought abstraction in statistics, and the combination of statistic distribution and statistical distribution of statistical household is approximate to explain the complex stochastic phenomena in reality.
The third chapter introduces several kinds of common statistical distribution families from different angles, the following is the thought map of this chapter,
"Statistical inference (statistical inference)" Reading notes--3rd Chapter statistical Distribution Family