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- Tue Oct 02, 2018 8:37 pm
- Forum: Econometric Discussions
- Topic: preliminary ADF, PP, KPPS testing for time-series analysis
- Replies: 0
- Views: 1561
Hello, I am running preliminary ADF, PP and KPPS testing for a set of variables (see attached). Most variables are ratios, the rest I have logged. I have the following questions 1) Variable NE had negative values (NE means the net exports of a country). Because it is not a ratio, I am logging the da...