Data Interpretation - Bar Charts

Study the bar chart and answer the questions.

Sale of Cellular Phones

1. 

The difference in the sales of cellular phones for the years 1997 and 1999 is ?

A. 500 units
B. 1,000 units
C. 5,000 units
D. 18,000 units

Answer: Option D

Explanation:

The required answer is got by 48,000 - 30,000 = 18,000.

2. 

The two years between which the rate of change of cellular phones is minimum are ?

A. 1997 and 1998
B. 1999 and 2000
C. Both option (A) and (B)
D. 2001 and 2002

Answer: Option C

Explanation:

The lowest rate of change for

For year 1997 and 1998 = ((48000 - 40000) / 40000) x 100 = 20%

For year 1999 and 2000 = ((30000 - 25000) / 25000) x 100 = 20%

is exhibited by both option (A) and (B).


3. 

The sum of sales of cellular phones in the years 1999 and 2001 is equal to that in ?

A. 1997
B. 1998
C. 2000
D. 2002

Answer: Option A

Explanation:

The sum of sales in the two years is 30,000 + 18,000 = 48,000, which is the sales value for 1997.

4. 

The percentage increases in sales from 2001 to 2002 was ?

A. 115 %
B. 128 %
C. 122 %
D. 118 %

Answer: Option C

Explanation:

The percentage increase exhibited is

((40 - 18)/18) x 100 = 122 % approximately.