Number of children in six different classes is given below. Represent the data on a bar graph C l a s s : V V I V I I V I I I I X X N u m b e r o f c h i l d r e n : 135 120 95 100 90 80 Which class has the maximum number of children?

Draw two lines perpendicular to each other such that the horizontal axis OA as “Class” and the vertical axis OB as “Number of Children” Along the horizontal axis OA , choose bars of equal width, with a uniform gap between them. In the bar graph height of rectangular box represent the number of children and maximum height shows the maximum number. Hence, in this bar graph class V has the maximum number of children.

Number of children in six different classes is given below. Represent the data on a bar graph Class V VI VII VIII IX X Number of children 135 120 95 100 90 80 Which class has the minimum number of children?

Draw two lines perpendicular to each other such that the horizontal axis OA as “Class” and the vertical axis OB as “Number of Children” Along the horizontal axis OA , choose bars of equal width, with a uniform gap between them. In the bar graph minimum height of rectangular box shows the minimum number. So, in this bar graph class X has the minimum number of children.

The performance of students in 1st term and 2nd term is as given below. Draw a double bar graph choosing appropriate scale and answer the following: Subject : English Hindi Maths Science S . Science 1 st term : 67 72 88 81 73 2 nd term : 70 65 95 85 75 Has the performance gone down in any subject?

A double bar graph is used to compare the survey answers of one group versus another group. Draw two lines perpendicular to each other such that the horizontal axis O X as “Subjects” and the vertical axis O Y as “Marks” Along the horizontal axis O X , choose bars of equal width, with a uniform gap between them. Select a suitable scale to determine the heights of the bars, according to the space available for the graph. Here, we choose 1 big division to represent 10 marks. Note that the height of bar graph of 2 nd t e r m in each subject except Hindi is more than the height of 1 st t e r m . Hence, from the graph we can see that the performance of student has gone down in Hindi subject.

Consider the following data gathered from a survey of a colony: Favorite Sport : Cricket BasketBall Swimming Hockey Athletics Watching : 1240 470 510 423 250 Participating : 620 320 320 250 105 Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph? What is more preferred watching or participating in sports?

Draw two lines perpendicular to each other such that the horizontal axis O X as “Favorite Sport” and the vertical axis O Y as “Number of People” Along the horizontal axis O X , select bars of equal width, with a uniform gap between them. Select a suitable scale to determine the heights of the bars, according to the space available for the graph. Here, we choose 1 big division to represent 100 people. Since, height of the bars represent the number of people. So, more height means more number of people. We can see from the graph that height of the bars for watching is more than the height of the bars for participating. That means number of people who watch the sports are more than the number of people who participates in sports. Therefore, watching is preferred over participation.

The following data gives the production of foodgrains (in thousand tonnes) for some years: Years 1995 1996 1997 1998 1999 2000 Production (in thousand tonnes) 120 150 140 180 170 190 Represent the above data with the help of a bar graph.

Draw two lines perpendicular to each other. Mark the horizontal axis OX as “Years” and the vertical axis OY as “Production of foodgrains (in thousand tonnes)”. Along the horizontal axis OX , choose bars of uniform (equal) width, with a uniform gap between them. Choose a suitable scale to determine the heights of the bars, according to the space available for the graph. Here, we choose 1 big division to represent 20 thousand tonnes. Thus, the above graph is the representation of the given information.

The following data gives the amount of manure (in thousand tonnes) manufactured by a company during some years: Year 1992 1993 1994 1995 1996 1997 Manure (in thousand tonnes) 15 35 45 30 40 20 Represent the above data with the help of a bar graph.

Let's draw two mutually perpendicular lines OX and OY . Along the horizontal line OX lets mark the years; and along the vertical line OY , let's mark the amount of manure in tonnes. Along the axis OX , let's choose an equal width of each bar, keeping the gap between the bars the same. We will now choose a suitable scale to determine the heights of the bars. Here, let's consider 1 big division = 5 thousand tonnes of manure Therefore, the heights of the various bars are as follows: Height of the bar against the year 1992 = 15 5 = 3 units. Height of the bar against the year 1993 = 35 5 = 7 units. Height of the bar against the year 1994 = 45 5 = 9 units. Height of the bar against the year 1995 = 30 5 = 6 units. Height of the bar against the year 1996 = 40 5 = 8 units. Height of the bar against the year 1997 = 20 5 = 4 units. Based on the above calculation, the bar graph is as follows:

The following data gives the amount of manure (in thousand tonnes) manufactured by a company during some years: Year 1992 1993 1994 1995 1996 1997 Manure (in thousand tonnes) 15 35 45 30 40 20 Indicate with the help of the bar graph the year in which the amount of manure manufactured by the company was maximum.

The horizontal axis OX represents “Years” and the vertical axis OY represents “Manure (in thousand tonnes)”. Scale is 1 cm = 5 thousand tonnes. From the graph we see in the year 1994 , the amount of manure manufactured by the company was maximum which is 45 .

R. D. Sharma Solutions for Chapter: Data Handling – Ill (Construction of Bar Graphs), Exercise 1: EXERCISE

Author:R. D. Sharma

R. D. Sharma Mathematics Solutions for Exercise - R. D. Sharma Solutions for Chapter: Data Handling – Ill (Construction of Bar Graphs), Exercise 1: EXERCISE

Attempt the free practice questions on Chapter 24: Data Handling – Ill (Construction of Bar Graphs), Exercise 1: EXERCISE with hints and solutions to strengthen your understanding. Mathematics for Class 7 solutions are prepared by Experienced Embibe Experts.

Questions from R. D. Sharma Solutions for Chapter: Data Handling – Ill (Construction of Bar Graphs), Exercise 1: EXERCISE with Hints & Solutions

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 3

Number of children in six different classes is given below. Represent the data on a bar graph

$C l a s s :$	$V$	$V I$	$V I I$	$V I I I$	$I X$	$X$
$N u m b e r o f c h i l d r e n :$	$135$	$120$	$95$	$100$	$90$	$80$

Which class has the maximum number of children?

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 3

Number of children in six different classes is given below. Represent the data on a bar graph

Class	V	VI	VII	VIII	IX	X
Number of children	$135$	$120$	$95$	$100$	$90$	$80$

Which class has the minimum number of children?

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 4

The performance of students in 1st term and 2nd term is as given below. Draw a double bar graph choosing appropriate scale and answer the following:

$Subject :$	$English$	$Hindi$	$Maths$	$Science$	$S . Science$
$1^{st} term :$	$67$	$72$	$88$	$81$	$73$
$2^{nd} term :$	$70$	$65$	$95$	$85$	$75$

Has the performance gone down in any subject?

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 5

Consider the following data gathered from a survey of a colony:

$Favorite Sport :$	$Cricket$	$BasketBall$	$Swimming$	$Hockey$	$Athletics$
$Watching :$	$1240$	$470$	$510$	$423$	$250$
$Participating :$	$620$	$320$	$320$	$250$	$105$

Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?
What is more preferred watching or participating in sports?

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 11

The following data gives the production of foodgrains (in thousand tonnes) for some years:

Years	$1995$	$1996$	$1997$	$1998$	$1999$	$2000$
Production (in thousand tonnes)	$120$	$150$	$140$	$180$	$170$	$190$

Represent the above data with the help of a bar graph.

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 12

The following data gives the amount of manure (in thousand tonnes) manufactured by a company during some years:

Year	$1992$	$1993$	$1994$	$1995$	$1996$	$1997$
Manure (in thousand tonnes)	$15$	$35$	$45$	$30$	$40$	$20$

Represent the above data with the help of a bar graph.

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 12

The following data gives the amount of manure (in thousand tonnes) manufactured by a company during some years:

Year	$1992$	$1993$	$1994$	$1995$	$1996$	$1997$
Manure (in thousand tonnes)	$15$	$35$	$45$	$30$	$40$	$20$

Indicate with the help of the bar graph the year in which the amount of manure manufactured by the company was maximum.

MEDIUM

7th CBSE

IMPORTANT

Mathematics for Class 7>Chapter 24 - Data Handling – Ill (Construction of Bar Graphs)>EXERCISE>Q 12

The following data gives the amount of manure (in thousand tonnes) manufactured by a company during some years:

Year	$1992$	$1993$	$1994$	$1995$	$1996$	$1997$
Manure (in a thousand tonnes)	$15$	$35$	$45$	$30$	$40$	$20$

The consecutive years during which there was maximum decrease in manure production are

R. D. Sharma Solutions for Chapter: Data Handling – Ill (Construction of Bar Graphs), Exercise 1: EXERCISE

R. D. Sharma Mathematics Solutions for Exercise - R. D. Sharma Solutions for Chapter: Data Handling – Ill (Construction of Bar Graphs), Exercise 1: EXERCISE

Questions from R. D. Sharma Solutions for Chapter: Data Handling – Ill (Construction of Bar Graphs), Exercise 1: EXERCISE with Hints & Solutions

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