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After class on Saturday, we noticed that Gretl has an "Append Data" option
under the "File" menu. I wish I had been aware of it sooner. It makes
adding more variables to your dataset very easy.
After downloading a data series from
stats.oecd.org (in CSV format):
After opening the CSV file, append it to the dataset
that I gave you with the "'join' (advanced)" option:
Your series should then be appended to the original data.
Beginning at the 20:30 mark, the weights should be:
wt25fe = lfwa25fe * prob25fe * ( 1 - prob25fe )
In other words, I should not have taken the square root.