a question about macro data unit root test

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I tested some China's macro variables like gdp M2 imports goverment consumption and so on, but many of them are I(2) or I(3), is it normal?

my observations is from 1979-2004 annual data

[此贴子已经被作者于2006-7-21 22:39:50编辑过]

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关键词：unit root question About Macro Quest test Macro Unit root question