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

The lines indicate three materials and their medium rate over every

month

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in 2014. In the first review, Nickel displays the highest fluctuation with the biggest gap with others

in

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at

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6% and

conversely

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the lowest point

at the end

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at 1%. Meanwhile, the lowest point of all months happens in

month

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six too. Copper has less change over

time

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which is approximately the same amount at the beginning and the end with 2% and 1.5%.

However

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,

Zinc

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has just

1

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a 1

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% distance at the first and the end, but with moderate up and down. Nickle after three months has a significant fall happens to 1%, Which is close to the start point of other materials, but copper is lower and at the same

time

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,

Zinc

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grows by 3%

in

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apply

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this

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time

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. in the fifth

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month

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,month

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all of them have an almost steady situation in order. The biggest decrease in the middle of

time

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is shown for Nickel until -3%,

however

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,

Zinc

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has

2

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a 2

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% drop too. copper is stable and

after

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this

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vibration is in growth between 1 or 2 percent gap until the eleventh

month

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. Considering the distance in the sixth

month

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the pattern of movement for both

Zinc

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and Nick is nearly equal with the lasting gap.

Finally

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,

last

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month

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all are closer to each other around 1% space.