Скачать или смотреть Q4) Ex 9.4 Class 6 Maths Chapter 9 Data Handling | Maths Class 6 CBSE NCERT Apni Classroom By Deepak

Q4) Ex 9.4 Class 6 Maths Chapter 9 Data Handling | Maths Class 6 CBSE NCERT Apni Classroom By Deepak

CHAPTER 9TH CLASS 6TH MATHEMATICS DATA HANDLING-
Topics under DATA HANDLING:-

9.1 Introduction- . A data is a collection of numbers gathered to give some information.

9.2 Recording Data
9.3 Organisation of Data
9.4 Pictograph-A pictograph represents data through pictures of objects. It helps
answer the questions on the data at a glance.
9.5 Interpretation of a Pictograph
9.6 Drawing a Pictograph
9.7 A Bar Graph
9.7.1 Interpretation of a bar graph
9.7.2 Drawing a bar graph

apni classroom,
#Class6thMaths
#class6thMathematics
#datahandling6thclass
#datahandlingInMaths
#Class6thMathsClasses
#datahandling
#class6thMathematicsClasses

rs aggarwal class 6th,
class 6 rd sharma solution,


class 6th exercise 9.4 question number 4,
class 6th maths exercise 9.4 question number 4,

What have we discussed?
1. We have seen that data is a collection of numbers gathered to give some information.
2. To get a particular information from the given data quickly, the data can be arranged in a tabular form using tally marks.
3. We learnt how a pictograph represents data in the form of pictures, objects or parts of objects. We have also seen how to interpret a pictograph and answer the related questions. We have drawn pictographs using symbols to represent a certain number of items or things. For example, = 100 books.
4. We have discussed how to represent data by using a bar diagram or a bar graph. In
a bar graph, bars of uniform width are drawn horizontally or vertically with equal
spacing between them. The length of each bar gives the required information.
5. To do this we also discussed the process of choosing a scale for the graph.
For example, 1 unit = 100 students. We have also practised reading a given bar
graph. We have seen how interpretations from the same can be made.

EXERCISE 9.3
1. The bar graph given
alongside shows the
amount of wheat purchased
by government during the
year 1998-2002.
Read the bar graph and write down your observations. In which year was
(a) the wheat production maximum?
(b) the wheat production minimum?
Days
Number of shirts sold
1 unit length = 5 shirts
2. Observe this bar graph which is showing the sale of shirts in a ready made shop from Monday to Saturday.
Now answer the following questions :
(a) What information does the above bar graph give?
(b) What is the scale chosen on the horizontal line representing number of shirts?
(c) On which day were the maximum number of shirts sold? How many shirts were
sold on that day?
(d) On which day were the minimum number of shirts sold?
(e) How many shirts were sold on Thursday?
3. Observe this bar graph which shows the marks obtained by Aziz in
half-yearly examination in different subjects.
Answer the given questions.
(a) What information does the bar graph give?
(b) Name the subject in which Aziz scored maximum marks.
(c) Name the subject in which he has scored minimum marks.
Marks
Subjects
1 unit length = 10 marks
1 unit length = 1 student
(d) State the name of the subjects and marks obtained in each of them


EXERCISE 9.4
1. A survey of 120 school students was done to find which activity they prefer
to do in their free time.
Preferred activity Number of students Playing 45
Reading story books 30
Watching TV 20
Listening to music 10
Painting 15
Draw a bar graph to illustrate the above data taking scale of 1 unit
length = 5 students.
Which activity is preferred by most of the students other than playing?
1 unit length = 200 rupees
2. The number of Mathematics books sold by a shopkeeper on six consecutive
days is shown below :
Days Sunday Monday Tuesday Wednesday Thursday Friday Number of
books sold 65 40 30 50 20 70
Draw a bar graph to represent the above information choosing the scale of
your choice.
3. 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 Number of bicycles manufactured
1998 800
1999 600
2000 900
2001 1100
2002 1200
(a) In which year were the maximum number of bicycles manufactured?
(b) In which year were the minimum number of bicycles manufactured?
4. Number of persons in various age groups in a town is given in the following table.
Age group 1-14 15-29 30-44 45-59 60-74 75 and above
(in years)
Number of 2 lakhs 1 lakh 1 lakh 1 lakh 80 40
persons 60 thousands 20 thousands 20 thousands thousands thousands
Draw a bar graph to represent the above information and answer the following questions.
(take 1 unit length = 20 thousands)
(a) Which two age groups have 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?