Line chart Questions and Answers

September 26, 2023

Line chart Questions and Answers

Here, In this Page you will find Line Chart Questions and Answers along with some of its rules. 

It also allows the user to visualize the trends and helps them in making analyses.

Line Chart Questions and Answers

What is a Line Chart ? 

A line chart is a type of data visualization that is used to display data points over a continuous interval or time period, typically on a two-dimensional Cartesian plane. Line charts are particularly effective for showing trends and patterns in data over time and are widely used in various fields such as finance, economics, science, and engineering.

Application of Data Interpretation

There are Many Areas where Data Interpretation is Used to Find Various data when we have to Identify Various data.

There are Four Types of Data Interpretation

1. Line Chart : A line Chart or graph is a graphical display of information that changes continuously over time.

2 . Pie Chart : In a pie chart, the length or central angle of each sector or slice is proportional to the quantity it represents.

3. Bar Chart : A bar chart represents the data as horizontal or vertical bars. The length of each bar is proportional to the amount that it represents.

4 . Radar Chart : A Radar chart is a graphical method of displaying multivariate data in the form of a two-dimensional chart of three or more quantitative variables represented on axes starting from the same point.

Below is an example image to understand about Pie Chart

The below data shows :

Average marks of the Graph of two students from the year 2001 to 2006.

line chart questions and answers

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Formulas and Rules to practice for Line Charts
How to solve Line Charts Questions Quickly
Line Charts Shortcuts, tips and tricks

Line Chart Questions and Answers

1. The line graph below shows the export of three different companies from the year 2001 to 2007. Study the graph carefully and answer the questions accordingly.

Among the following pairs of years find out which year the total exports of all the three companies was equal?

2005 and 2006

2005 and 2006

41.72%

2006 and 2007

2006 and 2007

23.93%

2001 and 2002

2001 and 2002

12.27%

2004 and 2007

2004 and 2007

22.09%

In 2001 = 20 + 40 + 70 = 130

In 2002 = 50 + 30 + 80 = 160

In 2003 = 30 + 130 + 50 = 210

In 2004 = 60 + 80 + 50 = 190

In 2005 = 110 + 40 + 70 = 220

In 2006 = 40 + 70 + 110 = 220

In 2007 = 130 + 110 + 150 = 390

Therefore, in the years 2005 and 2006 the export from all the three companies was same.

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

2. The line graph below shows the export of three different companies from the year 2001 to 2007. Study the graph carefully and answer the questions accordingly.


Among the following years given below in which year the difference between the export from company A and company B was the minimum?

2003

2003

23.36%

2005

2005

16.06%

2006

2006

15.33%

2007

2007

45.26%

In 2001: 40 – 20 = 20
In 2002: 80 – 50 = 30
In 2003: 130 – 30 = 100
In 2004: 80 – 60 = 20
In 2005: 110 – 40 = 70
In 2006: 70 – 40 = 30
In 2007: 130 – 110 = 20
On the basis of the option, the difference between the exports was minimum in 2007.

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

3. The line graph below shows the export of three different companies from the year 2001 to 2007. Study the graph carefully and answer the questions accordingly.

Find the difference between 2003 and 2006’s average export of the three Companies.

\frac{9}{2}

\frac{9}{2}

11.76%

\frac{8}{3}

\frac{8}{3}

23.53%

\frac{10}{3}

\frac{10}{3}

56.86%

\frac{11}{2}

\frac{11}{2}

7.84%

Average export of company A, B, and C is 2003 = \frac{30 + 130 + 50}{3} = 70

Average export of company A, B, and C is 2006 = \frac{40 + 70 + 110}{3} = \frac{220}{3}

Therefore, the difference = \frac{220}{3} - 70 = \frac{220-210}{3} = \frac{10}{3}

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

4. The line chart below shows the number of smartphones manufactured by company P and Q from the year 2005 to 2009. Study the graph carefully and answer the questions accordingly.

Identify the difference between the smartphones produced by Company Q in 2008 and 2009?

31000

31000

10.58%

32500

32500

9.62%

34000

34000

68.27%

36500

36500

11.54%

In 2008 company Q manufactured 13500 smartphones
In 2009 company Q manufactured 16900 smartphones
Therefore, the difference = 169000 – 135000 = 34000 smartphones.

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

5. The line chart below shows the number of smartphones manufactured by company P and Q from the year 2005 to 2009. Study the graph carefully and answer the questions accordingly.

Find the difference of between the smartphones produced by two Companies from 2005 to 2009.

32000

32000

54.12%

34000

34000

11.76%

31500

31500

23.53%

39500

39500

10.59%

Given, the production of smartphones by company P from 2005 to 2009 was: 121000 + 101000 + 145000 + 88000 + 180000 = 635000

The production of smartphones by company Q from 2005 to 2009 was: 141000 + 120000 + 102000 + 135000 + 169000 = 667000

Therefore, the difference = 667000 – 635000 = 32000

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

6. The line chart below shows the number of smartphones manufactured by company P and Q from the year 2005 to 2009. Study the graph carefully and answer the questions accordingly.

Find the approximate average number of smartphones produced by company P?

105900

105900

14.12%

127000

127000

80%

106989

106989

4.71%

100000

100000

1.18%

Average number of smartphones produced by company P

= \frac{121000 + 101000 + 145000 + 88000 + 180000}{5}

= \frac{635000}{5} = 127000

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

7. The line chart below shows the number of smartphones manufactured by company P and Q from the year 2005 to 2009. Study the graph carefully and answer the questions accordingly.

The making of smartphones by Company Q in 2008 was about what percent in comparison to the making of smartphones by Company P?

152%

152%

11.94%

155%

155%

16.42%

153%

153%

67.16%

161%

161%

4.48%

In 2008 the smartphones produced by company P = 88000

In 2008 the smartphones produced by company Q = 135000

Therefore, percentage = \frac{135000}{88000} \times 100 = 153%

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

8. The below line graph provides the percentage of the students who qualified an examination out of the total number of candidates who appeared for the examination over a period of seven years from 1994 to 2000. Study the graph carefully and answer the questions accordingly.

In which year the difference between the numbers of students qualified was maximum?

1992-1993

1992-1993

57.14%

1994-1995

1994-1995

18.57%

1989-1990

1989-1990

18.57%

1991-1992

1991-1992

5.71%

The difference between 1989 -1990 = 60 – 35 = 25

1990-1991 = 70 – 60 = 10

1991-1992 = 70 – 60 = 10

1992-1993 = 90 – 60 = 30

1993-1994 = 90 – 90 = 0

1994 – 1995 = 90 – 70 = 20

Therefore, the maximum difference was form 1992-1993

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

9. The below line graph provides the percentage of the students who qualified an examination out of the total number of candidates who appeared for the examination over a period of seven years from 1994 to 2000. Study the graph carefully and answer the questions accordingly.

If the total students qualified in 1989 was 5600, then find out how many students applied for the exam in 1989?

15020

15020

8.45%

16000

16000

66.2%

17100

17100

5.63%

Data Inadequate

Data Inadequate

19.72%

Let us assume the number of candidate applied for the exam in 1989 as x

Given, the number of students qualified = 5600

35% of x = 5600

\frac{35}{100} \times x = 5600

35x = 560000

x = \frac{560000}{35} = 16000

Therefore, students applied in 1989 = 16000.

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

10. The below line graph provides the percentage of the students who qualified an examination out of the total number of candidates who appeared for the examination over a period of seven years from 1994 to 2000. Study the graph carefully and answer the questions accordingly.

If the total students appeared in 1992 and 1993 were 42000, then find the total number of candidates qualified in these two years.

19000

19000

11.29%

21000

21000

11.29%

32154

32154

14.52%

Data Inadequate

Data Inadequate

62.9%

The total students qualified in 1992 and 1993 cannot be concluded till we don’t know that how many students appeared in any one of the year or the percentage of qualified candidate together in 1992 and 1993.

Therefore, the data provided is inadequate.

Good Job! Did you know? : With $8.5 billion in their kitty, Wipro is the 4th largest Indian IT company in terms of revenue.

Oops!

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