Hello students, we are providing case study questions for class 8 maths. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 8 maths. In this article, you will find case study questions for CBSE Class 8 Maths Chapter 4 Data Handling. It is a part of Case Study Questions for CBSE Class 8 Maths Series.

Chapter | Data Handling |

Type of Questions | Case Study Questions |

Nature of Questions | Competency Based Questions |

Board | CBSE |

Class | 8 |

Subject | Maths |

Useful for | Class 8 Studying Students |

Answers provided | Yes |

Difficulty level | Mentioned |

Important Link | Class 8 Maths Chapterwise Case Study |

### Case Study Questions on Data Handling

**Questions**

**Passage 1:** An eye camp is organise in a village. The graph below shows the number of people who came for eye check-ups during the camp.

**Difficulty Level: **Medium

Q. 1. For which age group the most eye check-ups were done during the camp?

(a) 20-30

(b) 30-40

(c) 40-50

(d) 80-90

Ans. Option (c) is correct.

Explanation: Most eye check ups were done for

people of age group 40-50.

Q. 2. How many people got their eyes checked in the camp?

Ans. 105 people got their eyes checked up in the camp.

Q. 3. Rajneesh said that, ‘Lesser number of people from the 20-40 years age group got their eyes checked than people from the 50-70 years age group’. Is Rajneesh correct? Justify your answer.

Ans. Yes, Rajneesh is correct

Because in age group 20-40, 27 people got their eye check up whereas in age group 50-70, 31 people got their eye check up.

### Also check

- Square and Square Roots Class 8 Case Study Questions Maths Chapter 5
- Data Handling Class 8 Case Study Questions Maths Chapter 4
- Understanding Quadrilaterals Class 8 Case Study Questions Maths Chapter 3
- Linear Equations in One Variable Class 8 Case Study Questions Maths Chapter 2
- Rational Numbers Class 8 Case Study Questions Maths Chapter 1

### Download eBooks for CBSE Class 8 Maths Data Handling

### Topics from which case study questions may be asked

- Data
- Pictograph
- Bar Graph – Double Bar graph
- Circle Graph OR Pie Chart
- Chance and Probability
- Random Experiment
- Equally likely outcomes
- Linking chances to probability
- Chance and probability Related to Real life

Data is usually collected in the context of a situation that we want to study. A Pictograph is a pictorial representation of data using symbols. Bar height give the quantity for each category. Bars are of equal width with equal gaps in between. Horizontal axis shows the class Interval. Vertical axis shows the frequency of class-interval.

Case study questions from the above given topic may be asked.

### Frequently Asked Questions (FAQs) on Data Handling Case Study

### Q1: What is lower class limit?

A1: The lower value of a class interval is called its lower class limit.

### Q2: What is upper class limit?

A2: The upper value of class interval is called its upper class limit.

### Q3: What is Double Bar graph?

A3: A bar graph showing two sets of data simultaneously is called Double Bar graph. It is useful for the comparison of

the data.

### Q4: If we change the position of any of the bars of a bar graph, would it change the information being conveyed? Why?

A4: No, it doesn’t matter if you change the position of the bars of a bar graph, because bar heights give the quantity for each category. Since, the height remains unchanged. So, the information conveyed regarding the quantity remain unchanged.

### Q5: **What is probability?**

A5: Probability is the possibility and imposibility of an event (E).

### Q6: **What do you mean by random experiment?**

A6: A random experiment is one whose outcome cannot be predicted exactly in advance.

### Q7: **If a coin is tossed 13 times and tail turns upto 7 times, what is the probability of occurrence of tail?**

A7: Since, the tail turns up to 7 times of 13. Therefore, probability will be 7/13.

### Q8: What do you mean by e**qually likely outcomes**?

A8: Outcomes of an event are called equally likely, if they all have same chances of occurring.

e.g., If a coin is tossed then there are equal chances of getting a head or a tail.

### Q9: **Are there any online resources or tools available for **data handling** case study questions?**

A9: We provide case study questions for CBSE Class 8 Maths on our website. Students can visit the website and practice sufficient case study questions and prepare for their exams. If you need more case study questions, then you can visit Physics Gurukul website. they are having a large collection of case study questions for all classes.