Use of Bar Graphs with a Different Purpose

Author:NCERT

7th CBSE

IMPORTANT

Use of Bar Graphs with a Different Purpose: Overview

This topic explains how to draw a bar graph using data. It also teaches us on how to understand it and how to analyse the statistical data so that we can easily visualize the use of data.

Important Questions on Use of Bar Graphs with a Different Purpose

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IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 1

From the data given below showing the minimum and the maximum temperature of various cities, plot a double bar graph and answer the following:

Cities	Ahmedabad	Amritsar	Bangalore	Chennai	Delhi	Jaipur	Jammu	Mumbai
Max Temp(°C)	$38$	$37$	$28$	$36$	$38$	$39$	$41$	$32$
Min Temp(°C)	$29$	$26$	$21$	$27$	$28$	$29$	$26$	$27$

Name the city which has the least difference between its minimum and the maximum temperature.

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 2

From the data given below showing the minimum and the maximum temperature of various cities, plot a double bar graph and answer the following:

Cities	Ahmedabad	Amritsar	Bangalore	Chennai	Delhi	Jaipur	Jammu	Mumbai
Max Temp(°C)	$38$	$37$	$28$	$36$	$38$	$39$	$41$	$32$
Min Temp(°C)	$29$	$26$	$21$	$27$	$28$	$29$	$26$	$27$

Name two cities where maximum temperature of one was less than the minimum temperature of the other.

HARD

IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 3

From the data given below showing the minimum and the maximum temperature of various cities, plot a double bar graph and answer the following:

Cities	Ahmedabad	Amritsar	Bangalore	Chennai	Delhi	Jaipur	Jammu	Mumbai
Max Temp(°C)	$38$	$37$	$28$	$36$	$38$	$39$	$41$	$32$
Min Temp(°C)	$29$	$26$	$21$	$27$	$28$	$29$	$26$	$27$

(ii) Which is the hottest city and which is the coldest city?

HARD

IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 4

Consider this data collected from a survey of a colony.

Favorite Sports	Cricket	Basket Ball	Swimming	Hockey	Athletics
Watching	$1240$	$470$	$510$	$430$	$250$
Participating	$620$	$320$	$320$	$250$	$105$

Which is more preferred, watching or participating in sports?

HARD

IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 5

Consider this data collected from a survey of a colony.

Favourite Sports	Cricket	Basketball	Swimming	Hockey	Athletics
Watching	$1240$	$470$	$510$	$430$	$250$
Participating	$620$	$320$	$320$	$250$	$105$

Which sport is the most popular?

HARD

IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 6

The performance of a student in $1 s t$ Term and $2 n d$ Term is given. Draw a double bar graph choosing appropriate scale and answer the following:

Subjects	English	Hindi	Math	Science	Social science
$1 s t$ term (max marks $100$ )	$67$	$72$	$88$	$81$	$73$
$2 n d$ term (max marks $100$ )	$70$	$65$	$95$	$85$	$75$

Has the performance gone down in any subject?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 7

The performance of a student in $1 s t$ Term and $2 n d$ Term is given. Draw a double bar graph choosing appropriate scale and answer the following:

Subjects	English	Hindi	Math	Science	Social science
$1 s t$ term (max marks $100$ )	$67$	$72$	$88$	$81$	$73$
$2 n d$ term (max marks $100$ )	$70$	$65$	$95$	$85$	$75$

In which subject is the improvement the least?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 8

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

Class	Fifth	Sixth	Seventh	Eighth	Ninth	Tenth
Number of Children	$135$	$120$	$95$	$100$	$90$	$80$

Find the ratio of students of class six to the students of class eight.

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 9

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

Class	Fifth	Sixth	Seventh	Eighth	Ninth	Tenth
Number of Children	$135$	$120$	$95$	$100$	$90$	$80$

Answer the following question:

Which class has the maximum number of children? And the minimum?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 10

Read the bar graph which shows the number of books sold by a bookstore during five consecutive years and answer the following question:

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Number of books sold in $1989$ are just less than _____ $(100 / 200) ?$

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 11

Read the bar graph which shows the number of books sold by a bookstore during five consecutive years and answer the following question:

Can you explain how you would estimate the number of books sold in $1989$ ?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 12

Read the bar graph (Fig) which shows the number of books sold by a bookstore during five consecutive years and answer the following question:

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In which year $250$ books sold?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 13

Read the bar graph which shows the number of books sold by a bookstore during five consecutive years:

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In which year were about $475$ books sold?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 14

Use the bar graph given below to answer the following question.

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How many students have dog as a pet?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 15

From the data given below showing the minimum and the maximum temperature of various cities, plot a double bar graph and answer the following:

Cities	Ahmedabad	Amritsar	Bangalore	Chennai	Delhi	Jaipur	Jammu	Mumbai
Max Temp(°C)	$38$	$37$	$28$	$36$	$38$	$39$	$41$	$32$
Min Temp(°C)	$29$	$26$	$21$	$27$	$28$	$29$	$26$	$27$

Which city has the largest difference in the minimum and maximum temperature on the given date?

MEDIUM

IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 16

Consider this data collected from a survey of a colony.

Favourite Sports	Cricket	Basketball	Swimming	Hockey	Athletics
Watching	$1240$	$470$	$510$	$430$	$250$
Participating	$620$	$320$	$320$	$250$	$105$

Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?

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IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 17

The performance of a student in $1 s t$ Term and $2 n d$ Term is given. Draw a double bar graph choosing appropriate scale and answer the following:

Subjects	English	Hindi	Math	Science	Social science
$1 s t$ term (max marks $100$ )	$67$	$72$	$88$	$81$	$73$
$2 n d$ term (max marks $100$ )	$70$	$65$	$95$	$85$	$75$

In which subject has the child improved his performance the most?

MEDIUM

IMPORTANT

MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 18

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

Class	Fifth	Sixth	Seventh	Eighth	Ninth	Tenth
Number of Children	$135$	$120$	$95$	$100$	$90$	$80$

How would you choose a scale?

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MATHEMATICS Textbook for Class VII>Data Handling>Use of Bar Graphs with a Different Purpose> Q 19

Use the bar graph to answer the following question.

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Which is the most popular pet?

Use of Bar Graphs with a Different Purpose

Use of Bar Graphs with a Different Purpose: Overview

Important Questions on Use of Bar Graphs with a Different Purpose

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