Скачать или смотреть Q2) Ex 9.2 Class 6 Maths Chapter 9 Data Handling | Maths Class 6 CBSE NCERT Apni Classroom By Deepak

Q2) Ex 9.2 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

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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 9.1
1. In a Mathematics test, the following marks were obtained by 40 students. Arrange these marks in a table using tally marks.
8 1 3 7 6 5 5 4 4 2
4 9 5 3 7 1 6 5 2 7
7 3 8 4 2 8 9 5 8 6
7 4 5 6 9 6 4 4 6 6
(a) Find how many students obtained marks equal to or more than 7.
(b) How many students obtained marks below 4?
2. Following is the choice of sweets of 30 students of Class VI.
Ladoo, Barfi, Ladoo, Jalebi, Ladoo, Rasgulla, Jalebi, Ladoo, Barfi, Rasgulla, Ladoo,
Jalebi, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo, Rasgulla, Ladoo, Ladoo,
Barfi, Rasgulla, Rasgulla, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo.
(a) Arrange the names of sweets in a table using tally marks.
(b) Which sweet is preferred by most of the students?
3. Catherine threw a dice 40 times and noted the number appearing each time as
shown below :
1 3 5 6 6 3 5 4 1 6
2 5 3 4 6 1 5 5 6 1
1 2 2 3 5 2 4 5 5 6
5 1 6 2 3 5 2 4 1 5
Make a table and enter the data using tally marks. Find the number that appeared.
(a) The minimum number of times (b) The maximum number of times
(c) Find those numbers that appear an equal number of times.
4. Following pictograph shows the number of tractors in five villages.
Viilages Number of tractors Observe the pictograph and answer the following questions.
(i) Which village has the minimum number of tractors?
(ii) Which village has the maximum number of tractors?
(iii) How many more tractors village C has as compared to village B.
(iv) What is the total number of tractors in all the five villages?
5. The number of girl students in each class of a co-educational middle school is depicted by the pictograph : Observe this pictograph and answer the following questions :
(a) Which class has the minimum number of girl students?
(b) Is the number of girls in Class VI less than the number of girls in Class V?
(c) How many girls are there in Class VII?
6. The sale of electric bulbs on different days of a week is shown below :
Days Number of electric bulbs Classes Number of girl students
Observe this pictograph and answer the following questions :
(a) Which merchant sold the maximum number of baskets?
(b) How many fruit baskets were sold by Anwar?
(c) The merchants who have sold 600 or more number of baskets are planning to buy
a godown for the next season. Can you name them?

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