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Difficulty:
Question Stats:
56% (03:35) correct
44%
(03:28)
wrong
based on 319
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History
| Country | Total Deposits | Average Age (MY) | Total Ore Tonnage (mm) | Zinc Grade (%) | Lead Grade (%) |
|---|---|---|---|---|---|
| Australia | 38 | 1,137 | 1939.5 | 6.97 | 4.39 |
| Canada | 72 | 662 | 1746.5 | 5.54 | 2.44 |
| China | 45 | 622 | 1698.1 | 4.63 | 1.62 |
| Germany | 5 | 275 | 336.2 | 3.55 | 2.00 |
| India | 19 | 1,791 | 575.3 | 4.06 | 1.03 |
| Iran | 10 | 402 | 470.3 | 5.37 | 1.96 |
| Kazakhstan | 14 | 439 | 551.6 | 3.40 | 1.46 |
| Mexico | 22 | 38 | 456.7 | 4.09 | 2.53 |
| Peru | 14 | 15 | 1104.9 | 3.86 | 1.41 |
| Russia | 12 | 551 | 916.6 | 3.86 | 3.01 |
| South Africa | 7 | 1,771 | 447.7 | 3.81 | 1.62 |
| United States | 65 | 346 | 2464.8 | 3.88 | 2.38 |
| True | False | |
| For the two countries with the greatest total ore tonnage, zinc deposits in tons are more than 1.5 times lead deposits in tons | ||
| Exactly half of the countries with a lead grade percentage of 2% or greater have zinc grade percentages below the median zinc grade level. | ||
| Disregarding units, the range for total ore tonnage is greater than the range for average age. |
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