dummy variables造句怎么写

8、This paper is an empirical study of the martingale hypothesis and return volatility under PLM for 30 most actively traded stocks on the Shanghai stock market by modeling the GARCH (1,1) with up-hit and down-hit dummy variables in both the mean and variance equations.

2、The dummy variables can only describe discrete changes in price indices, such as selling off-season dummy variable method will not be able to provide high precision analysis.

4、Several important conclusions are drawn: the stochastic dummy variables form and trigonometric form get the similar results;

6、In order to study the impact of warrants listing on the volatility of the underlying stocks, I use the EGARCH model introducing a dummy variables to estimate it.

1、Dummy variables can only describe the discrete changes of price index, for instance, using dummy variables in sales off-season can not provide upper precision estimating result.

5、Conclusion: It is easy to understand the analysis of covariance and analysis of variance can also be considered in regression analysis setting by defining appropriate dummy variables.

3、Some dependent variables, belonging to category ones, served as dummy variables to make the regression result with a positively explanative sense.

7、The efficiency of hospital services were influenced by internal factors and external factors, meanwhile the factors can be measured by dummy variables.