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2013-05-23 12:21
求翻译：In order to check for the presence of a unit root in the series, we use Dickey-Fuller test. Table 1 shows that the spot and futures price series of all the symbols are nonstationary.In particular, two time series χt and Yt are both integrated of order one, denoted as I(1), if they are both non-stationary in levels but 是什么意思？ 待解决
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In order to check for the presence of a unit root in the series, we use Dickey-Fuller test. Table 1 shows that the spot and futures price series of all the symbols are nonstationary.In particular, two time series χt and Yt are both integrated of order one, denoted as I(1), if they are both non-stationary in levels but
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