# Another example for chi-square:

Once again the Evil Pointy-Haired Boss has been accused of cheating at dice. In the last game, he had the following rolls:

number on dice |
1 |
2 |
3 |
4 |
5 |
6 |

how many times |
1 |
2 |
2 |
4 |
4 |
5 |

How likely is it that the dice are fixed? You can use the chi-square table below:

Ok, so now take that calculated chi square value and compare it to the critical chi square on the table.

So, because your chi-square calc is less than your chi square crit, you fail to reject your null hypothesis -- and your verdict? Well, your verdict is that your boss does not cheat (at least when it comes to dice).

Copyright University of Maryland, 2007

You may link to this site for educational purposes.

Please do not copy without permission

requests/questions/feedback email: mathbench@umd.edu