Given a mapping between items and their required probability of occurrence, generate a million items randomly subject to the given probabilities and compare the target probability of occurrence versus the generated values.

The total of all the probabilities should equal one. (Because floating point arithmetic is involved, this is subject to rounding errors).

aleph   1/5.0
beth    1/6.0
gimel   1/7.0
daleth  1/8.0
he      1/9.0
waw     1/10.0
zayin   1/11.0
heth    1759/27720 # adjusted so that probabilities add to 1
Related task

 Random number generator (device)


#import std
#import nat
#import flo
 
outcomes = <'aleph ','beth  ','gimel ','daleth','he    ','waw   ','zayin ','heth  '>
probabilities = ^lrNCT(~&,minus/1.+ plus:-0) div/*1. float* skip/5 iota12
 
simulation = 
 
^(~&rn,div+ float~~rmPlX)^*D/~& iota; ^A(~&h,length)*K2+ * stochasm@p/probabilities !* outcomes
 
format =
 
:/'        frequency   probability'+  * ^lrlrTPT/~&n (printf/'%12.8f')^~/~&m outcomes-$probabilities@n
 
#show+
 
results = format simulation 1000000