Abstract
AbstractFirst based on figures presented in the historical data, this paper first uses Malthus’ model of population growth as reference and establishes the mathematical model 1 about China’s population size and time by adopting the methods of regression and fitting; second through the adaptation of linear multiple regression method to make regression and fitting on the total number of population and the above three factors, a ternary linear regression model 2 is made; finally we find two factors: mortality rate, birth rate have great significance for the number of population, by using multiple regression, establishes the model 3.KeywordsStepwise regressionanalysis methodlogistic regression0-1 dummy variable
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