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

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

the lowest point

at the end

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

month

six too. Copper has less change over

time

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

However

,

Zinc

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

,

Zinc

grows by 3%

in

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apply

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this

time

. in the fifth

month

Add a comma

,month

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

time

is shown for Nickel until -3%,

however

,

Zinc

has

2

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a 2

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% drop too. copper is stable and

after

this

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

month

. Considering the distance in the sixth

month

the pattern of movement for both

Zinc

and Nick is nearly equal with the lasting gap.

Finally

,

last

month

all are closer to each other around 1% space.