Putting these ratios to use in the metal markets we could see that gold, platinum and copper provide retreated by approximately 38% from their all time highs earned in 2011. Platinum has retreated by a third, copper by 36% and gold by 39%. Silver, because your outlier has retreated by 63%, almost stopping exactly at the .62 coefficient. The depth of silver's decline also helps it hold its crown as one of the most speculative and volatile belonging to the metals.
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