d**********l 发帖数: 183 | 1 如果covariate里有time series 的regressor, response也是time series。这样的情
况下做linear regression是不是有些复杂?就我目前的理解是如果x和y都是
stationary的过程,或者如果x和y是cointegrated的,是可以直接做linear
regression只不过error的pattern 是stochastic的。
请问牛人们我的理解对吗?
如果y是stationary, x是i(1)那么是不是要把x difference 一次再对y 和diff(x)
做regression呢?
谢谢大虾的回答。 | f*******r 发帖数: 257 | 2 As I understand it, if x and y are cointegrated, then ols is consistent.
Nothing needs to be done other than ols. But a cointegration test needs to
be done a priori.
If x is i(1), then y on diff(x) can be regressed by ols. However, many
times it's not meaningful to regress y on diff(x)... |
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