The provided line graph illustrates the average monthly change in the revenue of three kinds of metal(Copper,nickel and zinc) whole 2014 year.Units are measured in proportion change in price compared with last month.
Overall,it can be seen that these metals experienced shows downward trend during the year.Nickel shows most obvious and consistent decrease,becoming the most monthly change in the prices,but zinc surpassed sharply and continue increase drammatically.Copper had middle percentages for most of the period.
In January,Nickel significantly decline sharply,decrease 5 proportion untill March.Eventually this pattern being stabilized one month.After that saw evident drop with oscillating from April to October.Suddenly,this figure increase steadily add aproximately 3 percent,then alike were stable at the end of this.
In contrast,Zinc at the beginning experienced rose from 1 percent to 3 percent.While Copper initially demonstrated decline gradually before June reduce 2 proportion.Likewise Zinc decrease moderately like copper,but resuls was slightly less.Followed by,both of these pattern remain unchanged July to Sertember.At the end of copper achieve around 1,5 percentage with slowly growth.Similarly,the remaining metal rise rapidly over a period of 3 months,notably were the popular choice regarding reach 2 percent in the final month.