Hi, Yes, the sample data is correct. Because I was worried on that score, I did a couple countries by hand in the Excel spreadsheet. That corresponds to Sample 1, which is the same as Sample 2, except the later also contains a couple countries which do not have sufficient Cantril data points so are not included by the best predictor program.

The point is that it's always useful to have some external data to verify the methods used by your program, beyond simply assuming that the methods are necessarily right. If there is a difference, ask "Why is that?".

Cheers MichaelW 👨‍🎨