Abstract
The paper aimed to examine the price development of gold, silver, and platinum from 1 January 2019 to 27 November 2023. The aim was also to predict the price development of pairs of metals – gold and silver, gold and platinum, and silver and platinum until the end of 2024. The Nearest Neighbours method in Wolfram Mathematica software was used to achieve the set goal. In terms of the development of metal pairs until the end of 2024, it was found that the most profitable pairs for investments are gold-platinum and silver-platinum. If an investor is to invest in a single metal, platinum is recommended. In the case of a pair of metals, it would be appropriate to choose gold-platinum or silver-platinum. The research is limited in terms of the metals selected, a narrower set of historical data to make a prediction, or the selected method.
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