On Mon, 6 Jun 2011, Leandro Zipitria wrote: > If I am working with a restricted version of a variable (using smpl > --restrict), the mean, standard deviation, etc. reported is for the > variable as a whole or just the restricted sample?
Just the restricted sample. Example: gretl version 1.9.5cvs Copyright Ramu Ramanathan, Allin Cottrell and Riccardo "Jack" Lucchetti This is free software with ABSOLUTELY NO WARRANTY Current session: 2011-06-06 21:11 "help" gives a list of commands Type "open filename" to open a data set ? open data4-1 open data4-1 Read datafile /usr/local/share/gretl/data/data4-1.gdt periodicity: 1, maxobs: 14 observations range: 1-14 Listing 5 variables: 0) const 1) price 2) sqft 3) bedrms 4) baths ? m = mean(sqft) m = mean(sqft) Generated scalar m = 1910.93 ? smpl 2 10 smpl 2 10 Full data range: 1 - 14 (n = 14) Current sample: 2 - 10 (n = 9) ? m = mean(sqft) m = mean(sqft) Replaced scalar m = 1670.44 > As a second answer, I am creating a doble loop for iterating mean and > standar deviation from a variable. I want to create a matix that store > the results of each calculation. That is, I have a panel, and want to > restrict it looping on one variable (city) which will be the columns, > and the time the rows. Each time gretl compute one statistic, I am > trying to store it in the matrix, following the previous order. Is this > possible? Yes it is. That said, I'm not at all sure to have understood what your need is, but I have the feeling that you can write a much more efficient script by using the pmean() and psd() function. Also, the user's guide is your friend. Riccardo (Jack) Lucchetti Dipartimento di Economia Università Politecnica delle Marche r.lucchetti(a)univpm.it http://www.econ.univpm.it/lucchetti
