[Gretl-users] Gretl: means by categorical variable

Hi Artur Thanks for responding. Sorry that I wasn't clear. I'm looking for how to do things using the menu based version. That is, where can I click on to get the aggregate or the means by group, using the menu drop downs? Thanks Gene On Thursday, May 23, 2024 at 02:24:19 AM EDT, Artur T. <atecon(a)posteo.de&gt; wrote: Hi, what you ask for is called an aggregation. Gretl has built-in a function called aggregate. Here is an example on how to execute the aggregate function as well as how to use the agg() function from the PandasPort package: <hansl> set verbose off open credscore.gdt # Group "Income" by binary dummy "Selfempl" and compute the mean help aggregate  # look at the help function matrix result = aggregate(Income, Selfempl, "mean") print result # Make use of the PandasPort package pkg install PandasPort  # must be executed once! include PandasPort.gfn # Using the package, you can even compute multiple operations strings operations = defarray("mean", "median") matrix result2 = agg(Income, Selfempl, operations) print result2 </hansl> Best Artur Am 22.05.24 um 23:17 schrieb g s: