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Thesis is divided into two parts, the first major study of the characteristics of China's stock of financial data , we focus stock price gains , as a one-dimensional marginal distribution , study its own characteristics and correlation. With two new distribution ( 2000 Jiang Wenjiang proposed ) to be carried out on the data and research . The second part of the study Quantile GARCH model parameter estimation problem , the application of the two methods , two-step estimation method and QQ estimation .
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