Rademacher random variable

[Aristeidis Dadoukis]

Hello all,

I am interested in generating independent realizations of a Rademacher random variable. Is this something that can be implemented in Stata?

Thank you

[William Lisowski]

The following three approaches should all yield pseudorandom numbers with a uniform distribution on the integers -1 and +1.

generate r1 = case(runiformint(0,1)==0,-1,+1)
generate r2 = 2*runiformint(0,1)-1
generate r3 = case(runiform(0,1)<=0.5,-1,+1)

[Aristeidis Dadoukis]

Dear William,

Thank you very much for the suggestions. Approach 2 worked, but not the other 2 - I got the following error,

nknown function case()

findint case did not return anything.

Any advice is appreciated.

Thank you

[William Lisowski]

Sorry, I meant cond() not case().

[Aristeidis Dadoukis]

Thank you for the clarification - all approaches work without any problem.

Thank you for the help