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Group unit root test: Summary
Series: Y, EX, DP, DINT, GDP
Date: 04/21/13 Time: 23:32
Sample: 1982 2009
Exogenous variables: Individual effects
Automatic selection of maximum lags
Automatic lag length selection based on SIC: 0 to 4
Newey-West automatic bandwidth selection and Bartlett kernel
Cross-
Method Statistic Prob.** sections Obs
Null: Unit root (assumes common unit root process)
Levin, Lin & Chu t* 5.239865914023394 0.9999999196533429 5 126
Null: Unit root (assumes individual unit root process)
Im, Pesaran and Shin W-stat 1.057157145224753 0.8547800627630415 5 126
ADF - Fisher Chi-square 13.91166538072643 0.1770590904819323 5 126
PP - Fisher Chi-square 10.32960439860372 0.4120673390773049 5 135
** Probabilities for Fisher tests are computed using an asymptotic Chi
-square distribution. All other tests assume asymptotic normality.