The graph below shows the average monthly change in the prices of three metals during 2014. Summarize the information by selecting and reporting the main feature, and make comparisons where relevant.

The line graph illustrates the average

change

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in the

price

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of copper,

nickel

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, and zinc within each month in 2014.

Overall

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, there were various degrees of instabilities in the cost of all metals, with

nickel

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having the most prominent fluctuation. The rate of

nickel

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throughout the

year

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2014 was observed to be significantly volatile relative to the other metals.

This

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was indicated by a steep decline of the average

price

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change

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from 6% in January to -3% in June, followed by 3 months of plateau, before stabilizing back up to only 1% of monthly

price

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change

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towards the end of the

year

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. Aside from that, the

price

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changes in the zinc group shared a lesser degree of fluctuation than

nickel

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, with the difference between the start and the end of the

year

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of only 1%.

In contrast

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with the other groups, the

price

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changes of copper throughout the

year

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were the most stable, with only a slight dip in May and June. The monthly

price

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variation in copper was relatively constant during the

year

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, starting and ending at 2% and around 1.5%

change

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, respectively.