For what it is worth: here is an example of a non-uniform random variate: a = [0,0,0,0,0,0,0,0,0,0] 1000.times do a[5 *(rand + rand)] += 1 end resul

For what it is worth: here is an example of a non-uniform random variate: a = [0,0,0,0,0,0,0,0,0,0] 1000.times do a[5 *(rand + rand)] += 1 end results in (actual numbers may vary randomly): irb(main):020:0> a => [28, 60, 96, 151, 171, 168, 146, 96, 63, 21]