The line graph illustrates how the prices of copper, nickel and zinc changed from month to month in 2014. The change in price is measured in percentage, compared to the previous month.
Nickel’s price is the most fluctuating one out of the three. That is the only one that could not even reach a 6% rise, but also a -3% drop in prices within half of a year, making a huge gap between the prices compared.
Copper and Zinc both seem to have a circular price range, peaking approximately at the end beginning and at the end of the year, and reaching its lowest in between, without a bigger fluctuation than 2% between two months after each other.
Taking these three metals into consideration, their prices in average are the cheapest in June, and the highest in December and January. Moreover, all three metal prices went higher more frequently during the year, than going lower.