Data Interpretation Line Graphs

The Line graph is a pictorial representation of data and helps determine trends and rates of change. The slope of the graph helps in computing the magnitude of change between two consecutive points. This graph is similar to the bar graph except for the fact that here data is in nature of the flow mode, and not discrete. The line graph indicates changes in plotted variables with respect to the two indices calibrated on the X and the Y axes respectively. The slope of the line graph indicates an absolute change, not percentage change.

6. What is the respective ratio of the number of people working in the IT department of organisation A and the number of people working in the Marketing department of organisation B?

Ans: 7 : 5

Explanation: Required ratio = 350 : 250 = 7 : 5

7. The number of people working in legal department of organisation A is approximately what percent of the total number of people working in that organisation? 

Ans: 5

Explanation: Number of all people working in organization A = 150 + 75 + 300 + 225 + 325 + 350
= 1425

Required Percentage = (75/1425) X 100 = 5

8. What is the total number of people working in organisation B?

Ans: 1575

Explanation: Total number of people working in organization B

 = (200 + 225 + 250 + 300 + 350 + 250) = 1575

9. What is the difference between the number of people working in HR. Legal and Marketing departments of organisation A and the number of people working in Accounts. Export and IT department of organisation B?

Ans: 375 

Explanation: Required difference = (300 + 350 + 250) – (150 + 75 + 300) 

 = 900 – 525 

 = 375

10. If 20% more than the existing number of people in the Exports department of organisation B, join the department, what will be the total number of people working in the Exports department of both the organisation (A and B) together?

Ans: 745 

Explanation: New number of exporters in organization B = (350 X 120) / 100 = 420

Required difference = 420 + 325  = 745