22.04.2013 09:37, Antti Erkkison:

Hi, sorry for this e-mail, but I have not found any other way to find this answer.

I am an economics student from Finland that are using Gretl, and finding it useful tool to analyze data.

We were wondering if Gretl had a function for dividing groups into low and high respondents, in other word we want to test a part of a population (in OLS) who have marked the highest scores in a survey. We want to test this against other answers in the same survey, but are in doubt that Gretl understands that person 1 is the same person when we change the order of respondents by sorting them in the dependent value and then setting the range to half of the population .

Hi,

if u r sorting the dataset as a whole the unit identifiers r sorted as well.
If u have a unit and time dimension u'd better use the panel option for defining the dataset structure.
If u r working with matrices in the first column the unit identifiers need to present and r then sorted along with the variable of interest.

Cheers
Pindar

I would really appreciate an answer, thank you.

Best regards

Antti Erkkison
_______________________________________________
Gretl-users mailing list
Gretl-users@lists.wfu.edu
http://lists.wfu.edu/mailman/listinfo/gretl-users