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

The line chart displays the average fluctuation regarding the costs of

Copper

, Nickel, and Zinc per month.

Overall

,

it is clear that

the

price

of Nickel experienced the greatest decline during the period,

while

Copper

had the least change in its

price

.

To begin

with, in January, the cost of

Copper

changed by 6% compared with the preceding month which was more than the other two metals.

However

, its

percentage

decreased to only 1% in March and remained the same for the following month. Yet, the changes regarding its

percentage

fell dramatically to -3% by June.

Then

, it rose to -1% in July and stayed steady for 3 months.

Moreover

, after a slight fall, it rose significantly from -2% to 1% by November. Concerning other items, Zink and

Copper

accounted for almost the same

percentage

in January, at 1% and 2% respectively.

Although

the

price

of Zinc had an upward trend at the beginning, and

Copper

’s cost had a downward one, they became equal in June, at about -1%. Afterwards,

Copper

’s

price

inclined to 1% for the three next months, whilst Zink’s

percentage

was just below 0%.

Finally

, they were quite similar

at the end

of the period, at roughly 2%.