Download the example project to see how plugin works https://www.construct.net/make-games/addons/176/chance/examples/1/chance.c3p
The plugin is used to generate random data, it's using ChanceJS under the hood (https://chancejs.com/)
if there are any function of chance that are not implemented in the plugin from the chance.js api let me know, and i'll implement them.
Of most the random methods are implemented as expression,
except for the roll dice, and the shuffle array
Chance.js is based on the Mersenne Twister PRNG (pseudorandom number generator)