RBSE Solutions for Class 8 Maths Chapter 16 Data Handling In Text Exercise

RBSE Solutions for Class 8 Maths Chapter 16 Data Handling In Text Exercise is part of RBSE Solutions for Class 8 Maths. Here we have given Rajasthan Board RBSE Class 8 Maths Chapter 16 Data Handling In Text Exercise.

 

Board	RBSE
Textbook	SIERT, Rajasthan
Class	Class 8
Subject	Maths
Chapter	Chapter 16
Chapter Name	Data Handling
Exercise	In Text Exercise
Number of Questions	12
Category	RBSE Solutions

Rajasthan Board RBSE Class 8 Maths Chapter 16 Data Handling In Text Exercise

Page No: 193

Question 1.
From given bar graph answer the following questions by looking at number of books on different-different subjects in library

Width of Bars are same and equal distances are kept between two consecutive bars.
Here, Length of bar represents- number of corresponding data
(i) Which subject has maximum number of books and how many?
(ii) Which subject has least number of books and how many?
(iii) How many(RBSESolutions.com)books are there in the library?
(iv) What information has been given by this bar graph?
(v) Difference in the number of books of which two subjects is minimum?
Solution:
(i) Hindi, 450
(ii) Social Science, 100
(iii) Total books = 150 + 300 + 350 + 450 + 100 = 1350
(iv) This bar graph represents the number of books of each subject in the library.
(v) Subjects Maths and Science (350 – 300 = 50) and English and Social Science (150 – 100 = 50) have the minimum difference of books.

Page No: 193-194

Question 2.
A double bar graph is given on marks obtained by 5 students in yearly and half yearly exam in mathematics subject.

Answer the following questions on basis of graph
(i) Whose performance was similar in annual and half yearly examination?
(ii) Whose performance was better in annual as compared to half yearly?
(iii) How many students(RBSESolutions.com)scored more than 50 in annual examination?
(iv) Which information is given in this double bar graph?
(v) What is the average of marks of half yearly? Is that less than average of annual examination?
Solution
(i) Vibha
(ii) Chayan
(iii) 3 students
(iv) The double bar graph gives the marks of 5 students obtained in Mathematics in half-yearly and yearly exam.
(v) Average of marks in half-yearly exam.
= [latex]\frac { 50+40+60+40+80 }{ 5 }[/latex]
= [latex]\frac { 270 }{ 5 }[/latex]
= 54
Average of marks in yearly exam..
= [latex]\frac { 55+40+85+50+70 }{ 5 }[/latex]
= [latex]\frac { 300 }{ 5 }[/latex]
= 60
Yes, average marks obtained in half-yearly exam is less than yearly exam.

Page No: 194

Draw different graphs to show given information
Question 3.
(i)

Solution

(ii)

Solution

Page No: 197

Question 4.
Study the following frequency distribution table given below and answer the following questions

(i) What is measure of class interval?
(ii) Which is upper limit of class interval 300-350?
(iii) Frequency(RBSESolutions.com)of which group is maximum?
(iv) Frequency of which two groups is same?
Solution
(i) Class size = 150 – 100 = 50
(ii) 350
(iii) 300-350
(iv) 100-150 and 400-450

Question 5.
Marks obtained by 40 students in science out of 50 marks is as follows
38, 35, 44, 30, 30, 33, 38, 40, 35, 45, 48,
40, 35, 45, 38, 35, 44, 33, 40, 42, 45, 38,
35, 33, 34, 37, 47, 49, 37, 47, 40, 31, 38,
43, 31, 37, 41, 38, 45, 40
(i) Make a frequency distribution table of given data taking interval 30-35, 35-40 etc
(ii) What are the(RBSESolutions.com)class limits of class interval 35-40?
(iii) What is class measure of, class interval?
Solution
(i) Frequency Table

(ii) Upper limit of 35 – 40 = 40 and lower limit – 35
(iii) Class size = 35 – 30 = 5

Page No: 198

Question 6.
Given below is a histogram between number of families and their expenditure (graph 16.5). From this histogram 16.5 we can tell
(i) How many families have minimum expenditure?
(ii) How many(RBSESolutions.com)families have maximum expenditure?
(iii) How many families have their expenditure less than Rs. 4000?

Solution
(i) 10 families.
(ii) 80 families.
(iii) 130 families (= 10 + 30 + 50 + 40).

Page No: 203

Question 7.
Sweets liked by students of a school is given below

Draw a pie-chart on the basis of data.
Solution

Question 8.
Write down number of members in families of your 5 friends and show it by pie chart
Solution:

Page No: 207

Question 9.
Fill in the blanks

Solution:

Page No: 208

Question 10.
When a dice is thrown, what are the possible 6 events?
Solution:
When a dice is thrown, the 6 possible outcomes are 1, 2, 3, 4, 5, 6.

Question 11.
What will be the possible results, when you rotate a wheel? From a list.
(Here result means(RBSESolutions.com)sector at which pointer stops after rotating).

Solution:
The possible results will be P, Q, R and S.

Question 12.
You have a bag and there are similar balls having different colors. You can draw a ball without looking at this. Write the results obtained.

Solution:
Results are – P,Q,R,S,T,U and V

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