First the basis of statistical grouping method,employing Bayes statistical theory to establish forecast model to forecast of instrument investment,then calculation is performed regarding to practical problem.
The second chapter, the Division of Economic Regions, will focus on the definition and characteristics of regions and economic regions, and the methods used to divide economic regions, applying both traditional statistical grouping method and modern cluster analysis method.
This paper applies principles of fuzzy mathematics to discuss two circumstances of statistical classfication, The edfect of the traditional method of statistical classification can beeliminated by the opplication of the new method.
Statistics are grouped,on the basis of which expected Bayesian estimates of state probability are used to establish the forecast model for security investment. Finally,calculations are performed regarding to practical problems,which show that the expected Bayesian method is feasible and easy to operate.
The article expound to method of statistical grouping, pursuit of Principle to determine class number in groupping in population by quantitative indieant: (1) quality principle (2) ehareateristic principle (3) mass principle (4) convenience principle. Explain to group interval combining the concept of set and interval, to produce new formula of computation group interval.
This paper applies principles of fuzzy mathematics to discuss two circumstances of statistical classfication, The edfect of the traditional method of statistical classification can beeliminated by the opplication of the new method. Consequentially, the accuracy of sta-tistical classification is improved, In the end, F-statistic is disscussed.
Due to so many uncertainties of the statistic object,i.e, fuzzy factors, the statistic classification method gets to lose its reliability gradually along with the increase of complexity of the statistic object. In this paper, The Mathematical Model of fuzzy statistic classification method (FSCM) is built, and the authors apply the model and attain the FSCM of five large or medium enterprises, and the result is more reliable.