Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling

Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling (Including Pictograph and Bar Graph)

Selina Publishers Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling (Including Pictograph and Bar Graph)

Data Handling Exercise 33A – Selina Concise Mathematics Class 6 ICSE Solutions

Question 1.
Marks scored by 30 students of class VI are as given below :
38, 46, 33, 45, 63, 53, 40, 85, 52, 75, 60, 73, 62, 22, 69, 43, 45, 33, 47, 41, 29, 43, 37, 49, 83, 44, 55, 22, 35 and 45. State :
(i) the highest marks scored.
(ii) the lowest marks scored.
(iii) the range of marks.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 1

Question 2.
For the following raw data, form a discrete frequency distribution :
30,32,32, 28,34,34,32,30,30,32,32,34,30,32,32. 28,32,30, 28,30,32,32,30,28 and 30.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 2

Question 3.
Define :
(i) data
(ii) frequency of an observation.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 3

Question 4.
Rearranage the following raw data in descending order :
5.3, 5.2, 5.1, 5.7, 5.6, 6.0, 5.5, 5.9, 5.8, 6.1, 5.5, 5.8, 5.7, 5.9 and 5.4. Then write the :
(i) highest value
(ii) lowest value
(iii) range of values
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 4

Question 5.
Represent the following data in the form of a frequency distribution :
52, 56, 72, 68, 52, 68, 52, 68, 52, 60, 56, 72, 56, 60, 64, 56, 48, 48, 64 and 64.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 5

Question 6.
In a study of number of accidents per day, the observations for 30 days were obtained as follows :
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A Q6
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 6

Question 7.
The following data represents the weekly wages (in ₹) of 15 workers in a factory : 900, 850, 800, 850, 800, 750, 950, 900, 950, 800, 750, 900, 750, 800 and 850.
Prepare a frequency distribution table. Now find,
(i) how many workers are getting less than ₹850 per week?
(ii) how many workers are getting more than ₹800 per week?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 7

Question 8.
Using the data, given below, construct a frequency distribution table : 9, 17, 12, 20, 9, 18, 25, 17, 19, 9, 12, 9, 12, 18, 17, 19, 20, 25, 9 and 12. Now answer the following :
(i) How many numbers are less than 19?
(ii) How many numbers are more than 20?
(iii) Which of the numbers, given above, is occurring most frequently?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 8

Question 9.
Using the following data, construct a frequency distribution table : 46, 44, 42, 54, 52, 60, 50, 58, 56, 62, 50, 56, 54, 58 and 48.
Now answer the following :
(i) What is the range of the numbers?
(ii) How many numbers are greater than 50?
(iii) How many numbers are between 40 and 50?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33A 9

Data Handling Exercise 33B – Selina Concise Mathematics Class 6 ICSE Solutions

Question 1.
The sale of vehicles, in a particular city, during the first six months of the year 2016 is shown below :
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B Q1
vehicles sold
Draw a pictograph to represent the above data.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B 10

Question 2.
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B Q2
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B Q2.1
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B 11

Question 3.
The following pictograph shows the number of watches manufactured by a factory, in a particular weeks.
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B Q3
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B Q3.1
Find
(i) on which day were the least number of w atches manufactured?
(ii) total number of watches manufatured in the whole week?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B 12

Question 4.
The number or animals in five villages are as follows :
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B Q4
Prepare a pitctograph of these animals using one symbol to represent 20 animals.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B 13

Question 5.
The following pictograph shows different subject books which are kept in a school library.
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B Q5
Taking symbol of one book = 50 books, find :
(i) how many History books are there in the library ?
(ii) how many Science books are there in the library ?
(iii) which books are maximum in number ?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33B 14

Data Handling Exercise 33C – Selina Concise Mathematics Class 6 ICSE Solutions

Question 1.
The following table gives the number of students in class VI in a school during academic years 2011-2012 to 2015-2016.
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q1
Represent the above data by a bar graph.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 15

Question 2.
The attendence of a particular class for the six days of a week are as given below :
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q2
Draw a suitable graph.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 16

Question 3.
The total number of students present in class VI B, for the six days in a week were as given below. Draw a suitable bar graph.
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q3
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 17

Question 4.
The following table shows the population of a particular city at different years :
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q4
Represent the above information with the help of a suitable bar graph.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 18

Question 5.
In a survey of 300 families of a colony, the number of children in each family was recorded and the data has been represented by the bar graph, given below :
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q5
Read the graph carefully and answer the following questions :
(i) How many families have 2 children each?
(ii) How many families have no child?
(iii) What percentage of families have 4 children?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 19
Question 6.
Use the data, given in the following table, to draw’ a bar graph
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q6
Out of A, B, C, D, E and F
(i) Which has the maximum value.
(ii) Which is greater A + D or B + E.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 20

Question 7.
The bar graph drawn below shows the number of tickets sold during a fair by 6 students A, B, C, D, E and F.
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q7
Using the Bar graph, answer the following questions :
(i) Who sold the least number of tickets?
(ii) Who sold the maximum number of tickets?
(iii) How many tickets were sold by A, B and C taken together?
(iv) How many tickets were sold by D, E and F taken together?
(v) What is the average number of tickets sold per student?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 21

Question 8.
The following bar graph shows the number of children, in various classes, in a school in Delhi.
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C Q8
Using the given bar graph, find :
(i) the number of children in each class.
(ii) the total number of children from Class 6 to Class 8.
(iii) how many more children there are in Class 5 compared to Class 6 ?
(iv) the total number of children from Class 1 to Class 8.
(v) the average number of children in a class.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 22

Question 9.
The column graph, given above, shows the number of patients, examined by Dr. V.K. Bansal, on different days of a particular week.
Use the graph to answer the following:
(i) On which day were the maximum number of patients examined?
(ii) On which day were the least number of patients examined?
(iii) On which days were an equal number or patients examined?
(iv) What is the total number of patients examined in the week?
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 23

Question 10.
A student spends his pocket money on various items, as given below :
Books : Rs. 380, Postage : Rs. 30, Cosmetics : Rs. 240, Stationary : Rs. 220 and Entertainment: Rs. 120.
Draw a bar graph to represent his expenses.
Solution:
Selina Concise Mathematics Class 6 ICSE Solutions Chapter 33 Data Handling Ex 33C 24

Selina Concise Mathematics Class 6 ICSE Solutions