Probability Proportional to Size (PPS)

[Thein Zaw]

Hi ,
I want to get 1500 samples from the variable maymay_list using PPS method on township level. How should I do it? Please guide me. Here is my data set.


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* Example generated by -dataex-. To install: ssc install dataex
clear
input str23 TownshipName long tot_pop int maymay_list
"Mingaladon"              331586 104
"Hmawbi"                  244607  40
"Hlegu"                   270741  54
"Taikkyi"                 277268 101
"Htantabin"               145792  15
"Shwepyithar"             343526  25
"Hlaingtharya"            687867 538
"Dagon Myothit (South)"   371646 174
"Dagon Myothit (East)"    165628  74
"Dagon Myothit (Seikkan)" 167448 141
"Thanlyin"                268063 136
"Kyauktan"                167448  40
"Thongwa"                 157876  32
"Kayan"                   158019  46
"Twantay"                 226836  75
"Kawhmu"                  119050  23
"Kungyangon"              111632  20
"Dala"                    172857  89
"Seikgyikanaungto"         34003  36
end

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[Stephen Jenkins]

There are at least 3 options, in the sense that there are at least three programs for PPS sampling available:

Stas Kolenikov's -ppssample- : net describe ppssample, from(http://staskolenikov.net/stata)
Ben Jann's -gsample-, on SSC
My -samplepps-, on SSC

All are easily located using Stata's -search-. (See FAQ.)

[Thein Zaw]

Hi Stephen,
I did installaiton ppssample into my stata, but once request help ppssample, I found only the follwing, not documentation

ppssample from http://staskolenikov.net/stata
ppssample -- module to perform probability-proporitonal-to-size sampling /
Author: Stas Kolenikov, [email protected] / Sorry for the lack of
documentation / It requires options -mos()- (measure of size variable) /
and -seed- (the seed for the random number generator) / You can also

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