Willard wrote:
I have a population of company's. I want a sample from this population,
but the probability of a company to be sampled has to be equivalent with
the number of employees (let's call this "size").
----
There may be smarter ways than this. Here I assume that you have 100 companies with 1 to 100 employees:
------------------------------------------------------------------
// generate 100 companies with 1-100 employees
clear
set obs 100
gen company=_n
set seed 123456
gen size=int(100*uniform())+1
// expand with number of employees
expand size
// We want 10 companies; sample 15 to allow for duplicates
sample 15 , count
// drop duplicates from the sample
sort company
drop if company==company[_n-1]
// sample 10 companies
sample 10 , count
------------------------------------------------------------------
Does this do what you want?
Svend
________________________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone, work: +45 8942 6090
Phone, home: +45 8693 7796
Fax: +45 8613 1580
E-mail: [email protected]
_________________________________________________________
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