I would use the more advanced random number generator, with the RAND function. RANUNI is relatively primitive - it generates a sequence of 2^32 integers (the seed value), which then repeats, and the integer values are all unique within the sequence. For your actual purpose it may be good enough, but make a habit of using the more advanced function.   There is no SEED parameter in RAND, but you can initialize the random number stream with a call to STREAMINIT, e.g.: data want; call streaminit(253252); /* the seed initialization */ n1=rand('UNIFORM',1,100); /* corresponds to 1+99*ranuni(seed), values between 1 and 100 */ n2=rand('UNIFORM',100); /* corresponds to 100*ranuni(seed), values between 0 and 100 */ run; ... View more

You're welcome @yuwentaiwan ! ... View more

For the values you have, @Tom 's reply is probably the best way. For a generic calculation, here is another way: data HAVE; input OBA F $20.; cards; 1 7/30+4/3 2 5/30 3 9/30 4 11/30 5 21/30-23/16+5/8 ; data WANT; set HAVE; F1=input(resolve('%sysevalf('||F||')'),32.); putlog F1= ; SE=F1*(1-F1)/5; run;   F1=1.5666666667 F1=0.1666666667 F1=0.3 F1=0.3666666667 F1=-0.1125       ... View more

Thank you!!:) ... View more

Very elegant Sir @FreelanceReinh  ... View more