The line graph below illustrates the average price of copper, nickel, and zinc in 2014. In the first month of the year, the price of nickel was higher than the other two metals.
The highest amount of changes was related to nickel. In March, the price of nickel became one-sixth compared to January, and after that it remained stable for a month. In May, it decreased a little and reached its lowest value in the middle of the year. During the month, it increased about two times and was stable for three months. It decreased slightly in October compared to September, but increased again in the following month and was stable until December.
Cooper did not change much compared to the other two metals. At the beginning of the year, it was in the second place, and at the end of the year, with a slight decrease, it was still in the second place. Until the middle of the year, the price of Cooper was decreasing compared to the beginning of the year, but then it increased a little and was stable for three months. From September to October, it decreased a little again and remained stable until November, and finally increased a little in December.
Zinc was in the last place at the beginning of the year. The price of zinc in February was about three times twice as high as in January, and then it decreased in four months. It increased slightly in the seventh month of the year and was stable for three months, but decreased again in October. In November, it tripled with the increase in price and reached the first place in December.
Overall, At the end of the year, the ranking of zinc and nickel was changed in terms of price, and Cooper had the least changes.