Data Handling ICSE Class-8th Concise Selina Mathematics Solutions Chapter-22 . We provide step by step Solutions of Exercise / lesson-22 Data Handling for ICSE Class-8 Concise Selina Mathematics.
Our Solutions contain all type Questions with Exe-22 A and Exe-22 B to develop skill and confidence . Visit official Website CISCE for detail information about ICSE Board Class-8 Mathematics.
Data Handling ICSE Class-8th Concise Selina Mathematics Solutions Chapter-22
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Exe -22 A Data Handling ICSE Class-8th Concise Selina Mathematics 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
Answer :-
(i) Ascending order = 5, 7, 10, 11, 12, 15, 16
(ii) Ascending order = 4.7, 5.6, 5.9, 6.3, 9.8, 12.3
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
Answer :-
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.
Answer :-
(i)
Data | Tally Marks | Frequency |
5 | |||| | 4 |
6 | |||| | 4 |
7 | ||| | 3 |
8 | |||| | 5 |
9 | ||| | 3 |
10 | ||| | 3 |
(ii)
Data | Tally Marks | Frequency |
1 | ||| | 3 |
2 | |||| | 5 |
3 | || | 2 |
4 | |||| | 4 |
5 | |||| | 4 |
Question 4 :-
Following are the marks obtained by 30 students in an examinations.
15 | 20 | 8 | 9 | 10 |
16 | 17 | 20 | 24 | 30 |
44 | 47 | 38 | 36 | 40 |
27 | 25 | 28 | 30 | 19 |
7 | 11 | 21 | 31 | 41 |
37 | 47 | 23 | 20 | 17 |
Taking class intervals 0-10, 10-20, ……… 40-50 ; construct a frequency table.
Answer :-
Class Intervals | Tally Marks | Frequency |
0-10 | ||| | 3 |
10-20 | |||| || | 7 |
20-30 | |||| |||| | 9 |
30-40 | |||| | | 6 |
40-50 | |||| | 5 |
Question 5 :-
Construct a frequency distribution table for the following data ; taking class-intervals 4-6, 6-8, ……… 14-16.
11.5 | 6.3 | 7.8 | 9.2 | 10.5 |
4.5 | 6 | 8.3 | 12.5 | 15.8 |
7.4 | 5.3 | 8.4 | 15.2 | 8.9 |
9.8 | 8.25 | 6.5 | 5.8 | 10.5 |
4.6 | 6.4 | 8.9 | 10.8 | 12.7 |
6.6 | 4.3 | 4.7 | 9.4 | 10.1 |
15.5 | 14.4 | 12.2 | 7.7 | 5.5 |
Answer :-
Class Intervals | Tally Marks | Frequency |
4-6 | |||| || | 7 |
6-8 | |||| ||| | 8 |
8-10 | |||| |||| | 10 |
10-12 | |||| | | 6 |
12-14 | ||| | 3 |
14-16 | |||| | | 6 |
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 ……..
Answer :-
(i) Lower class limit of 15-18 is …15…
(ii) Upper class limit of 24-30 is …30..
(iii) Upper limit of 5-12.5 is 12.5
(iv) If the upper and lower limits of a class interval are 16 and 10; the class interval is 10 – 16
(v) If the lower and upper limits of a class interval are 7.5 and 12.5 ; the class interval is 7.5 – 12.5
Data Handling Exe-22 B for ICSE Class-8th Concise Selina Mathematics
Question 1 :-
Hundred students from a certain locality use different modes of travelling to school as given below. Draw a bar graph.
Bus | Car | Rickshaw | Bicycle | Walk |
32 | 16 | 24 | 20 | 8 |
Answer :-
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.
Answer :-
Name of items | Expenditure/Saving in Rupees | Central angle |
Rent | 1800 | 1800/7200×360º=90º |
food | 2700 | 2700/7200×360º=135º |
Education | 900 | 900/7200×360º=45º |
Others | 1200 | 1200/7200×360º=60º |
Saving | 600 | 600/7200×360º=30º |
Total | 7200 | 360º |
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.
English | Hindi | Maths | Science | Social Studies |
85 | 60 | 35 | 50 | 70 |
Answer :-
Question 4 :-
The following table shows the market position of different brand of tea-leaves.
Brand | A | B | C | D | others |
% of Buyers | 35 | 20 | 20 | 15 | 10 |
Draw it-pie-chart to represent the above information.
Answer :-
Name of brand | % of Buyers | Central angle |
A | 35 | 35/100×360º=126º |
B | 20 | 20/100×360º=72º |
C | 20 | 20/100×360º=72º |
D | 15 | 15/100×360º=54º |
Others | 10 | 10/100×360º=36º |
100 | 360º |
Question 5 :-
Students of a small school use different modes of travel to school as shown below:
Mode | Bus | Car | Bicycle | Auto | On foot |
No. of students | 142 | 98 | 50 | 34 | 16 |
Draw a suitable bar graph.
Answer :-
Question 6 :-
For the following table, draw a bar-graph
A | B | C | D | E | F |
230 | 400 | 350 | 200 | 380 | 160 |
Answer :-
Question 7 :-
Manoj appeared for ICSE examination 2018 and secured percentage of marks as shown in the following table:
Subject | Hindi | English | Maths | Science | Social Study |
Marks as percent | 60 | 45 | 42 | 48 | 75 |
Represent the above data by drawing a suitable bar graph.
Answer :-
Question 8 :-
For the data given above in question number 7, draw a suitable pie-graph.
Answer :-
∵ 60 + 45 + 42 + 48 + 75 = 270
∴ Central angle for Hindi = 60/270×360º = 80º
Central angle for English = 45/270×360º = 60º
Central angle for Maths = 42/270×360º = 45º
Central angle for Science = 48/270×360º = 64º
and Central angle for Social study = 75/270×360º = 100º
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.
Items | Price (in ₹) at the shop A | Price (in ₹) at the shop B |
Tea-set | 900 | 950 |
Mixie | 700 | 800 |
Coffee-maker | 600 | 700 |
Dinner set | 600 | 500 |
Answer :-
Question 10 :-
The following tables shows the mode of transport used by boys and girls for going to the same school.
Bus | Bicycle | Walking | Other sources | |
Number of boys | 80 | 60 | 20 | 85 |
Number of girls | 90 | 75 | 35 | 60 |
Draw a double bar graph representing the above data.
Answer :-
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