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Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling

Contents

Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling

Selina Publishers Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling

Data Handling Exercise 22A – Selina Concise Mathematics Class 8 ICSE Solutions

Question 1.
Arrange the following data as an array (in ascending order):
(i) 7, 5, 15, 12, 10, 11, 16
(ii) 6.3, 5.9, 9.8, 12.3, 5.6, 4.7
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A 1

Question 2.
Arrange the following data as an array (descending order):
(i) 0 2, 0, 3, 4, 1, 2, 3, 5
(ii) 9.1, 3.7, 5.6, 8.3, 11.5, 10.6
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A 2

Question 3.
Construct a frequency table for the following data:
(i) 6, 7, 5, 6, 8, 9, 5, 5, 6, 7, 8, 9, 8, 10, 10, 9, 8, 10, 5, 7, 6, 8.
(ii) 3, 2, 1, 5, 4, 3, 2, 5, 5, 4, 2, 2, 2, 1, 4, 1, 5, 4.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A 3

Question 4.
Following are the marks obtained by 30 students in an examinations.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A Q4
Taking class intervals 0-10, 10-20, ……… 40-50 ; construct a frequency table.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A 4

Question 5.
Construct a frequency distribution table for the following data ; taking class-intervals 4-6, 6-8, ……… 14-16.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A Q5
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A 5

Question 6.
Fill in the blanks:
(i) Lower class limit of 15-18 is ………
(ii) Upper class limit of 24-30 is ……..
(iii) Upper limit of 5-12.5 is ………
(iv) If the upper and the lower limits of a class interval are 16 and 10 ; the class-interval is ……..
(v) If the lower and the upper limits of a class interval are 7.5 and 12.5 ; the class interval is ……..
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22A 6

Data Handling Exercise 22B – Selina Concise Mathematics Class 8 ICSE Solutions

Question 1.
Hundred students from a certain locality use different modes of travelling to school as given below. Draw a bar graph.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q1
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 7

Question 2.
Mr. Mirza’s monthly income is Rs. 7,200. He spends Rs. 1,800 on rent, Rs. 2,700 on food, Rs. 900 on education of his children ; Rs. 1,200 on Other things and saves the rest.
Draw a pie-chart to represent it.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 8

Question 3.
The percentage of marks obtained, in different subjects by Ashok Sharma (in an examination) are given below. Draw a bar graph to represent it.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q3
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 9

Question 4.
The following table shows the market position of different brand of tea-leaves.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q4
Draw it-pie-chart to represent the above information.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 10

Question 5.
Students of a small school use different modes of travel to school as shown below:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q5
Draw a suitable bar graph.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 11

Question 6.
For the following table, draw a bar-graph
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q6
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 12

Question 7.
Manoj appeared for ICSE examination 2018 and secured percentage of marks as shown in the following table:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q7
Represent the above data by drawing a suitable bar graph.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 13

Question 8.
For the data given above in question number 7, draw a suitable pie-graph.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 14

Question 9.
Mr. Kapoor compares the prices (in Rs.) of different items at two different shops A and B. Examine the following table carefully and represent the data by a double bar graph.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q9
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 15

Question 10.
The following tables shows the mode of transport used by boys and girls for going to the same school.
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B Q10
Draw a double bar graph representing the above data.
Solution:
Selina Concise Mathematics Class 8 ICSE Solutions Chapter 22 Data Handling Ex 22B 16ff

Selina Concise Mathematics Class 8 ICSE Solutions

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