Generate random integers

[LarsFolkestad]

Hello Listers

i want to make a mock dataset

i would like to generate 2 integers at random
1) either 0 or 1
2) between 18-99
3) either 0 or 1 but at a ratio of 5 to 1

thank you.

best
lars

[Clyde Schechter]

Your post confuses me. You say you want to generate 2 integers at random, and then you list 3 descriptions. So then I thought perhaps you meant that you wanted three random variables with N = 2, but you can't have a 5 to 1 ratio of anything in an N of 2. So I'm going to guess that the 2 was a typo.

gen wanted1 = runiformint(0, 1)
gen wanted2 = runiformint(18, 99)
gen wanted3 = runiformint(0, 5)
replace wanted3 = 1 if wanted3 > 1

Note: The code I gave for wanted 3 will geneate 5 1's for each 0. If you meant the other way around (I couldn't tell) then just follow that with -replace wanted3 = !wanted3-.

And don't forget to set the random number generator seed before you start so that you will be able to reproduce your results.

[Felix Bittmann]

A summary can be found here: https://blog.stata.com/2012/07/18/us...rators-part-1/

clear all
set obs 9999
set seed 123

gen r = runiform()

*1.)
gen a = cond(r < 0.5, 0, 1)

*2.)
gen b = floor((99 - 18 + 1) * r + 18)

*3.)
gen c = cond(r < 0.20, 0, 1)

summarize *