First this article used expands the Dick - fuller model the card index to carry on the time series analysis to our country in, finally indicated the index the returns ratio might not forecast.

首先本文采用扩展迪克—富勒模型对我国上证指数进行了时间序列分析，结果表明指数的收益率是不可预测。

youdao

First this article used expands the Dick - fuller model the card index to carry on the time series analysis to our country in, finally indicated the index the returns ratio might not forecast.

首先本文采用扩展迪克—富勒模型对我国上证指数进行了时间序列分析，结果表明指数的收益率是不可预测。

youdao