The purpose of this post is to show statistics of the weighing of large numbers of chips of the same kind. Avalable statistics are:
N (number of chips weighed)
M (mean)
STD (standard deviation)
MIN (weight of lightest chip)
05% (5 percentile)
10% (10 percentile)
25% (25 percentile)
50% (50 percentile)
75% (75 percentile)
90% (90 percentile)
95% (95 percentile)
MAX (weight of heaviest chip)
All weights are grammes with an accuracy of 0.01g. Scale used: Jscale HP-50X.
Paulson Private Cardroom Hot Stamp
| Chip | 5 | 25 | 100 | 500 |
| N | 160 | 160 | 100 | 80 |
| M | 9.27 | 10.43 | 10.26 | 9.74 |
| STD | 0.09 | 0.07 | 0.07 | 0.10 |
| MIN | 9.07 | 10.23 | 10.08 | 9.59 |
| 05% | 9.13 | 10.32 | 10.18 | 9.61 |
| 10% | 9.15 | 10.33 | 10.18 | 9.65 |
| 25% | 9.25 | 10.39 | 10.19 | 9.67 |
| 50% | 9.27 | 10.44 | 10.24 | 9.72 |
| 75% | 9.33 | 10.48 | 10.31 | 9.78 |
| 90% | 9.38 | 10.51 | 10.35 | 9.84 |
| 95% | 9.41 | 10.53 | 10.38 | 9.99 |
| MAX | 9.50 | 10.63 | 10.45 | 10.01 |
Conclusions: The average weights are generally somewhat heavier than the shaped inlay chips that uses the same mould and colours. 50% of the chips are generally within about 0.1g. 90% of the chips are within 0.2g for the 25 and 100 chip, 0.3g for the 5 chip and 0.4g for the 500 chip.
Chipco Egyptians | | Chip | $500 | $1000 | | | N | 95 | 40 | | | M | 10.66 | 14.06 | | | STD | 0.04 | 0.03 | | | MIN | 10.39 | 14.01 | | | 05% | 10.63 | 14.03 | | | 10% | 10.63 | 14.03 | | | 25% | 10.65 | 14.04 | | | 50% | 10.66 | 14.06 | | | 75% | 10.67 | 14.08 | | | 90% | 10.70 | 14.10 | | | 95% | 10.74 | 14.11 | | | MAX | 10.77 | 14.14 | |
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Conclusions: The chip weights show much less variance than Paulson Hot Stamps. The standard deviation on the $500 would have been 0.03 save one outlying observation. 50% of the chips are within 0.02g ($500) and 0.04g ($1000). 90% of the chips are within about 0.1g. The $1000 chip is the new octagon with edgespots at the "top" and "bottom". The old octagon, which has more texture and edgespots to the
right and left, is about 0.3 g lighter. I have to few of these to include them in the statistics. The $5000 plaques apparently also exists in two versions with slightly different weights, one weighing about 39.2g and one weighing about 39.8g.
Note: I can't get the tables to work properly at this moment. Hopefully I will be able to correct this.
More chips will be added later.
TT
Poker Chip Weight Variance 
Linear Mode
