Receipt Numbers at Cambridge Grill

I have now bought food from Cambridge Grill 50 times over my years at MIT. Over these 50 visits, this was the distribution of the thousands digit of the number of my order:

0: 16
1: 4
2: 2
3: 1
4: 0
5: 4
6: 5
7: 5
8: 6
9: 7

A Χ² test identifies this as statistically significantly different from a uniform distribution at even the p=0.001 level.

(For comparison, here’s the distribution of the units digits.

0: 4
1: 3
2: 4
3: 8
4: 5
5: 5
6: 4
7: 9
8: 4
9: 4

A Χ² test doesn’t identify this as statistically significantly different from a uniform distribution at even the p=0.1 level.)

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