This page can be used to verify that Randominator's random number generator is unbiased - it'll run its Randomizer over the sample and count how many times each of values have been picked.
Assuming that nothing broke, the distribution should be uniform - that is, each of the items should be picked similar number of times. Variance will be displayed in results.
This page is designed for ad-hoc tests, so please don't shout if it breaks. I don't care.