> m4=arima(dpgs,order=c(6,0,0),include.mean=F,xreg=dpus)
> m4
Call:
arima(x = dpgs, order = c(6, 0, 0), xreg = dpus, include.mean = F)
Coefficients:
ar1 ar2 ar3 ar4 ar5 ar6 dpus
0.3953 0.1634 0.0946 0.0297 -0.0873 -0.0525 0.1927
s.e. 0.0389 0.0400 0.0404 0.0405 0.0400 0.0373 0.0136
sigma^2 estimated as 0.0002524: log likelihood = 1949.61, aic = -3883.21
> tratio=m4$coef/sqrt(diag(m4$var.coef))
> tratio
ar1 ar2 ar3 ar4 ar5 ar6
10.1665214 4.0831152 2.3403724 0.7348286 -2.1806680 -1.4083434
dpus
14.2107813
是用t比么,求回答,上面哪些系数不显著?


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