Bayes discrimination function was found out by stepwise discrimination getting the preparative and very marked discrimination variables.

Methods Stepwise discriminant analysis was used to establish a mathematical model with the incidences of bacillary dysentery,monthly average air temperature,monthly precipitation,and monthly sunshine hours of 14 major cities in Hunan during the period of 1987～2006.

Influence relationship between clothing structure designing math model positions in stepwise regression;

Predicting the properties of aliphatic alcohols in stepwise regression;

Rapid differential diagnosis of thalassemia trait and iron-deficiency anemia with stepwise regression analysis;

Prediction of the canine coronal size by stepwise regression analysis;

Through stepwise regression analysis of the damaging degree and the willow features,the relationship between the variant regulation of the indices among different willow varieties and damage degree by Anoplophora glabripennis were studied.

In terms of artificial neural network method,mean generation function and stepwise regression analysis,a prediction model for the annual number of tropical cyclones affecting Guangxi is developed in this paper.

The test data are analyzed with progressive regression,finding that the load-bearing capacity of package of T203 and T204 is superior to T202 but their anti-oxidation and anti-corrosion abilities are well-matched,and DNA and CuDDP have good anti-oxidation performances.

Firstly,progressive regression technique is used to seek the dominating factors affecting energy forecast and eliminate the secondary ones.