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Chi-square calculator for dice
Based on the article "Be thy die ill-wrought?" from Dragon, Issue #78, October 1983.

This script will tell you if a die is biased or not.

In order for the statistics to work properly, you'll need to roll your die enough times for each result to be able to occur at least 5 times. So, for example, if you want to test a d6 you'll need to roll it at least 6 x 5 = 30 times. If you want the assessment to be more accurate, then use a number greater than 5; the higher this number ("E" in the form below), the better.

Number of sides on the die = S
Number of times each roll
should occur
= E (must be at least 5)
Roll the die S x E times and enter the results here, separated
by spaces and/or commas: