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Evaluating Pref Gem Count

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Jul 31st, 2015
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  1. The Gem counts for prif gem rocks were evaluated. The given percentages add up to 99.98%, so I decided to figure out exactly what the gem distribution was and where the rounding error occurred. I took the Given % and multiplied it by the given N to get a gem count estimate. The number obtained was rounded to the nearest digit and then divided by 11771 to get a percentage. The gem count estimate was then manually increased and decreased by 1, while keep the denominator 11771 to see where rounding error occurred. One gem could be explained by increased the Onyx count by 1. The other was not found. Based on the percentages provided and the stated count, I don't see how the stated count is possible. The data should either be re-evaluated wherever it is stored or removed.
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  3. Given N = 11771 Given % Given N*Given% Rounded Manual Change True % Rounded % Should Match Given %
  4. Uncut Sapphire 48.42% 5699.5182 5700 5700 48.42409% 48.42% TRUE
  5. Uncut Emerald 28.27% 3327.6617 3328 3328 28.27287% 28.27% TRUE
  6. Uncut Ruby 8.97% 1055.8587 1056 1056 8.97120% 8.97% TRUE
  7. Uncut Diamond 3.79% 446.1209 446 446 3.78897% 3.79% TRUE
  8. Uncut Onyx 0.08% 9.4168 9 10 0.084955% 0.08% TRUE
  9. Spirit Sapphire 5.78% 680.3638 680 680 5.77691% 5.78% TRUE
  10. Spirit Emerald 2.93% 344.8903 345 345 2.93093% 2.93% TRUE
  11. Spirit Ruby 1.24% 145.9604 146 146 1.24034% 1.24% TRUE
  12. Spirit Diamond 0.39% 45.9069 46 46 0.39079% 0.39% TRUE
  13. Spirit D-Stone 0.11% 12.9481 13 13 0.11044% 0.11% TRUE
  14. Total of Column 99.98% 11768.6458 11769 11771* 99.99150%** 99.98%
  15. Should be 100% for true and 99.98% for rounded
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  17. **Was obtained by summing the column but can also be seen as 11770/11771 which is the number of gems accounted for divided by Given N.
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  19. *This 11771 was inputed as the true value, as this column SHOULD add up to 11770. The sum of the column above is 11770 as 1 gem could not be accounted for. The True% is given by "Changing Rounded"/11771. This is fair to do because the given value of N is 11771 and there is no interaction between other numbers this way, since we are trying to get total count to 11771 anyway. It is also fair to do this because in the tests where +1 was added to each gem count, the column would have summed to 11771.
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  21. By inputting 11771 I could also lower each of the numbers by 1 to see if the rounded % stayed the same while the True% did not. This also did not change things.
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  23. The only gem count which could be increased without changing its rounded value to 4 decimal places was a Spirit Onyx.
  24.  
  25. Based on the percentages provided and the stated count, I don't see how the stated count is possible. The data should either be re-evaluated wherever it is stored or removed.
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