Important data handling questions for class 8 maths chapter 5 are provided here to help the students get completely acquainted with the concepts. These questions from class 8 data handling topic (NCERT) given require the students to have a deeper understanding of the concepts and thus, will help to develop problem-solving skills.
Important Data Handling Questions for Class 8 (Chapter 5)
The data handling questions also include questions from “chance and probability” as the concepts are included in the NCERT class 8 maths book. Some of the most important data handling and chance and probability questions are given below.
Data Handling and Chance and Probability Questions
1. Answer the following questions:
(i) What is the total angle at the centre of a pie chart?
(ii) What does the height and width of rectangles in a histogram represent?
(iii) Is tossing a coin a random experiment?
(ii) The height represents the number of times the values within an interval occurred and the width represents the length of the interval covered by the bar.
(iii) Yes, tossing a coin is a random experiment. To recall, a random experiment is an experiment or a process for which the outcome cannot be predicted with certainty.
2. A group of students were asked about their favourite superhero. The responses were as follows:
Batman, Superman, Ironman, Spiderman, Superman, Batman, Spiderman, Superman, Spiderman, Batman, Ironman, Batman, Ironman, Ironman, Superman, Batman, Spiderman, Batman, Ironman, Superman, Ironman, Batman.
(i) How many students like Ironman?
Ironman is liked by 6 students.
(ii) Which is the most liked superhero?
From the table,
Number of students like
Batman = 7
Superman = 5
Ironman = 6
Spiderman = 4
So, the most liked superhero is Batman.
(iii) Draw a frequency distribution table from the data.
Frequency distribution table will include how often a superhero’s name is repeated.
3. Calculate the probability of picking a prime number from a lot containing the first 100 natural numbers.
Number of elements in the sample space = 100
Total number of prime numbers = 25 (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97)
So, the probability of picking a prime number from the lot = 25/100 =¼
4. A student scored the following marks in six subjects:
36, 35, 50, 46, 60, 55
Calculate the mean marks scored by him.
Mean = sum of data points/ total number of data
So, Mean = (36 + 35 + 50 + 46 + 60 + 55)/6 = 282/6 = 47
5. A bag contains 10 red balls and 8 white balls. Find the probability of picking one white ball.
Total number of white balls = 8
Total number of red balls = 10
So, total number of balls = 10 + 8 = 18
Here, the total favourable outcome will be the total number of white balls i.e. 8
P(The ball drawn is white) = (Number of favourable cases)/ (Total number of cases)
= 8/18 = 4/9
More Topics Related to Data Handling and Probability for Class 8
|Data Collection And Organization||Probability|
|NCERT Solutions for Class 8 Maths Chapter 5- Data Handling||Data Handling Class 8 Notes- Chapter 5|
More Questions From Class 8 Chapter 8 Comparing Quantities