Double Bar Graphs

Q. What is a graph?

Q.

How we check answers of all practice questions?

Q. The maximum and minimum temperatures of five Indian cities are given in °C. Draw a joint bar graph for this data.

Temperature	City.	Delhi	Mumbai	Kolkata	Nagpur	Kapurthala
Maximum temperature		35	32	37	41	37
Minimum temperature		26	25	26	29	26

Q.

Question 80
The following table shows the average intake of nutrients in calories by rural and urban groups in a particular year. Using a suitable scale for the given data, draw a double bar graph to compare the data.
$\begin{array}{ccc}& & \\ \text{Foodstuff}& \text{Rural}& \text{Urban}\\ \text{Pulses}& 35& 49\\ \text{Leafy vegetables}& 14& 21\\ \text{Other vegetables}& 51& 89\\ \text{Fruits}& 35& 66\\ \text{Milk}& 70& 250\\ \text{Fish and flesh foods}& 10& 22\\ \text{Fats and oils}& 9& 35\\ \text{Sugar/Jaggery}& 19& 31\end{array}$

Q.

Out of 30 students in a class, 6 like football, 12 like cricket and remaining like tennis. Find ratio of

a) Number of students liking football to number of students liking tennis

b) The number of students liking cricket to the total number of students

Q.

The table below gives the flavours of ice-cream liked by children (boy and girls) of a society.

Study the table and answer the following questions:
Find the ratio fo children who liked strawberry flavour to Vanilla flavour of ice-cream

Q.

The performance of a student in $1^{\mathrm{st}}$Term and $2^{\mathrm{nd}}$ Term is given. Draw a double bar graph choosing appropriate scale and answer the following.

(i) In which subject, has the child improved his performance the most?

(ii) In which subject is the improvement the least?

(iii) Has the performance gone down in any subject?

Subject	English	Hindi	Maths	Science	S. Science
$1^{\mathrm{st}}\mathrm{Term}(\mathrm{M}.\mathrm{M}.100)$	$67$	$72$	$88$	$81$	$73$
$2^{\mathrm{nd}}\mathrm{Term}(\mathrm{M}.\mathrm{M}.100)$	$70$	$65$	$95$	$85$	$75$

Q. Draw the frequency polygon representing the following frequency distribution.

$\begin{array}{ccccccc}Classinterval& 30-34& 35-39& 40-44& 45-49& 50-54& 55-59\\ Frequency& 12& 16& 20& 8& 10& 4\end{array}$
[4 MARKS]

Q.

Question 83(i)
Observe the following data:
$\begin{array}{ccc}& & \\ & \text{Government School, Chandpur}& \\ \text{Daily attendance}& & \text{Date: 15.04.2009}\\ \text{Class}& \text{Total students}& \text{Number of students}\\ & & \text{present on that day}\\ \text{VI}& \text{90}& \text{81}\\ \text{VII}& \text{82}& \text{76}\\ \text{VIII}& \text{95}& \text{91}\\ \text{IX}& \text{70}& \text{65}\\ \text{X}& \text{63}& \text{62}\end{array}$
Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?

Q. The double bar graph below shows the marks obtained by some students in two of their class tests.

Find the average marks scored by the students in the first test.

1. 55 marks
2. 60 marks
3. 70 marks
4. 75 marks

Q. Question 81(ii)
Study the double bar graph and answer the question that follows:

Find the total number of boys in all sections of class VII.

Q. Question 81(i)
Study the double bar graph and answer the question that follows:

What information does the double bar graph represent?

Q.

Given below is a double bar graph representing total number of boys and girls in class IX-A to IX-D.

Which section has maximum number of students?

1. IX-D

2. IX-B

3. IX-C

4. IX-A

Q. Question 79(ii)
Study the double bar graph shown given below and answer the question that follows:

Calculate the ratio of minimum temperatures in the year 2008 to the year 2009 for the month of November.

Q.

Take the data giving the minimum and the maximum temperature of various cities given in the following table:

Temperatures of the cities as on 20.6.2006
City	Max.	Min.
Ahmedabad	38 ºC	29 ºC
Amritsar	37 ºC	26 ºC
Banglore	28 ºC	21 ºC
Chennai	36 ºC	27 ºC
Delhi	38 ºC	28 ºC
Jaipur	39 ºC	29 ºC
Jammu	41 ºC	26 ºC
Mumbai	32 ºC	27 ºC

Plot a double bar graph using the data and answer the following:

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

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

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

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

Q.

The double bar graph given below gives the number of men and women visiting a sports complex during last week. Can you spot the day when the number of men was equal to the number of women?

1. Thursday

2. Friday

3. Sunday

4. Monday

Q.

Find the ratio of the following:

30 minutes to 45 minutes

Q. The double bar graph below shows the marks obtained by some students in two of their class tests. Find the average marks scored by the students in the second test.

1. 66
2. 55
3. 60
4. 75

Q.

Question 78(vi)
Study the double bar graph shown below and answer the questions that follow :

Find the ratio of sales of brand A as compared to brand B for the month of January.

Q.

Question 82(i)
In a public library, the following observations were recorded by the librarian in a particular week.
$\begin{array}{ccccccc}& & & & & & \\ \text{Days}& \text{Mon}& \text{Tue}& \text{Wed}& \text{Thur}& \text{Fri}& \text{Sat}\\ \text{Newspaper readers}& 400& 600& 350& 550& 500& 350\\ \text{Magazine readers}& 150& 100& 200& 300& 250& 200\end{array}$
Draw a double bar graph choosing a appropriate scale.

Q.

Question 90(i)
The table below gives the data of tourists visiting 5 hills stations over two consecutive years. Study the table and answer questions that follow:

Draw a double bar graph to depict the above information using an appropriate scale.

Q. Question 79(iv)
Study the double bar graph shown given below and answer the question that follows:

Find the average minimum temperature for the year 2008 for the four months.

Q. Question 4(i)
The performance of a student in $1^{st}$ term and $2^{nd}$ term is given. Draw a double bar graph choosing appropriate scale and answer the following:
$\begin{array}{cccccc}Subject& English& Hindi& Maths& Science& S.Science\\ 1^{st}term\left(MM.100\right)& 67& 72& 88& 81& 73\\ 2^{nd}term\left(MM.100\right)& 70& 65& 95& 85& 75\end{array}$
In which subject has the child improved his performance the most?

Q. Question 78(v)
Study the double bar graph shown below and answer the questions that follow :

List all months for which the sales of brand B was less than that of brand A.

Q. Question 81(iii)
Study the double bar graph and answer the question that follows:

In which sections, the number of girls is greater than the number of boys?

Q. Draw the double bar graph for the following data.

Sports played by number of students of ABC school in 2018 and 2019.

Sports	No. of students (2018)	No. of students (2019)
Cricket	10	5
Tennis	5	10
Chess	15	20
Football	10	15

1. 
2. 
3. 
4. 

Q. Consider the double bar graph given below. Find the average of the number of students present in both classes (Assuming that all the student participate in sports and each student participates exactly in one sport)?

1. 65
2. 60
3. 55
4. 50

Q. Question 77(v)
Study the double bar graphs given below and answer the following questions:

For how many sports students of class VIII are less than class VII?

Q. Question 81(iv)
Study the double bar graph and answer the question that follows:

In which section, the number of boys is the maximum?

Q. Question 78(i)
Study the double bar graph shown below and answer the questions that follow :

What information is represented by the above double bar graph?