Скачать или смотреть contract collapse fillin || STATA | Data Management | Econometrics Melody | U/Graduate || Mphil /Phd

30 March 2021 [Tuesday]
Facebook:   / econometricsmelody  

In this video, we will learn about three stata commands: "contract" "collapse" and "fillin" command used for reorganizing or combining data.

Some of the commands used in this tutorial are as given below:

use contr1, clear
contract a, freq(f) cfreq(cf) percent(p) cpercent(cp)
contract a b, freq(f) cfreq(cf) percent(p) cpercent(cp) float
expand f

use collap, clear
collapse a b d e; collapse a b d, by(c)
collapse (mean) a (median) b (p30) pt=d, by(c)
collapse (sd) a (semean) b (sepoisson) sep=a, by(c)
collapse (sum) a (count) b (max) sep=a, by(c)
collapse (last) a (firstnm) b (lastnm) sep=a, by(c)
collapse a b d e, cw

use fillin, clear
fillin a b c

We hope that you will find this useful.

Many Thanks
Econometrics Melody