The graph below shows the average monthly chnage in the prices of three metal during 2014.

The provided line graph compares the mean

price

alternation of three metals (copper,

nickel

, and zinc) in each month of the year 2014.

Overall

,

nickel

prices varied very much in 12 months

whereas

zinc prices maintained almost a flat trend.

To begin

with,

while

the cost of

nickel

dramatically switched to 5% in March from January, it followed a steady trend till May 2014. But after that, the

price

had changed significantly in July after just over 3.5% cost rotation. Though the

price

did not alter in July, August, September, and December, the rotation was three per cent from October to November. Interestingly, the charges of zinc

also

share an identical curve to the

nickel

.

On the other hand

, the charges of copper fluctuated very less compared to other two metals. Though the

price

did not change at all from July to September and October to November, the largest variation was a little above 1.5% from June to July.