The graph below shows the average monthly change in the prices of three metals during 2014.

The graph depicts the mean monthly variation in the

cost

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of

copper

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,

nickel

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and zinc during 2024.

Overall

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, it can be seen that the

price

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of

copper

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was highest at the beginning,

while

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in the end, the

cost

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of

copper

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reached to maximum .

Furthermore

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, the prices of three metals showed fluctuations over the period.

To begin

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with , the

price

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of

nickel

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in January was about six per cent it reduced to 1% in March,yet it remained constant from March to April .

Additionally

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, from May to December,

nickel

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demonstrated a variation in its rate . The charges of zinc were approximately positive 1% in January and rose to 3% in February,

whereas

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in the next four months, the

cost

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declined to -1%.From July to December, the

price

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of

nickel

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increased by 2%.

Conversely

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, the

cost

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of

copper

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continued to abate from January to March amounting to -1% but remained steady in the next month .

Moreover

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, the

price

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of

copper

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rose to 1% by September and in the next month, it illustrated fluctuation in its ratio .