Haryana State Board HBSE 6th Class Maths Solutions Chapter 9 Data Handling Ex 9.4 Textbook Exercise Questions and Answers.

## Haryana Board 6th Class Maths Solutions Chapter 9 Data Handling Exercise 9.4

Question 1.

A survey of 120 school students was done to find which activity they prefer to do in their free time. Draw a bar graph to illustrate the given data taking scale of 1 unit length = 5 students.

Which activity is preferred by most of the students other than playing ?

Solution:

Reading books is preferred by most of the students other than playing.

Question 2.

Following table shows the number of bicycles manufactured in a factory during the years 1998 to 2002. Illustrate this data using a bar graph. Choose a scale of your choice.

Years — No. Manufactured of Bicycles

1998 — 800

1999 — 600

2000 — 900

2001 — 1100

2002 — 1200

(a) In which year were the maximum number of bicycles manufactured ?

(b) By looking at the bar graph, write which two years show the maximum rise in the manufacture of bicycles ?

Solution:

(a) In 2002, maximum number of bicycles were manufactured.

(b) 2000 and 2001 show the maximum rise in the manufacture of bicycles.

Question 3.

Number of persons in various age groups in a town is given in the following table :

Age group — No. of persons

1-14 — 2 lakh

15-29 — 1 lakh 60 thousand

30-44 — 1 lakh 20 thousand

45-59 — 1 lakh 20 thousand

60-74 — 80 thousand

75 and above — 40 thousand

Draw the bar graph to represent the above information and answer the following questions (take 1 unit length = 20 thousand)

(a) Which two age groups have the same population ?

(b) All persons in the age group of 60 and above are called senior citizens. How many senior citizens are there in the town ?

Solution:

(а) 30-44 and 45-59 have the same population.

(b) .80,000 + 40,000 = 1,20,000 are senior citizens.