Case Study Questions for Class 8 Maths Chapter 5 Data Handling
Here we are providing Case Study questions for Class 8 Maths Chapter 5 Data Handling.
Table of Contents
| Maths Class 8 Chapter 5 | Data Handling |
|---|---|
| Maths | CBSE Class 8 |
| Chapter Covered | Class 8 Maths Chapter 5 |
| Topics | Circle Graph or Pie Chart Chance and Probability |
| Type of Questions | Case Study Questions |
| Questions with Answers | Yes, answers provided |
| Important Keywords | Provided in the end |
Case Study Questions
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CBSE Class 8 Maths Chapter 5 Data Handling
Learning Outcomes
- Circle Graph or Pie Chart
- Chance and Probability
Important Keywords
- Data: Numerical observations collected by an observer is called data (raw data).
- Frequency: The number of times an observation occurs in the given data is called the frequency of the observation.
- Frequency Distribution: A way of presenting data that exhibits the values of the variable and corresponding frequencies is called a frequency distribution.
- Range: The difference between the highest and the lowest values of observation is called range. i.e., Range = Highest observation – Lowest observation
- Class-mark: The mid-point of a class-interval is called class-mark.
- Histogram: Grouped data can be presented using the histogram. A histogram is a type of bar diagram, where the class intervals are shown on the horizontal axis and the height of the bars show the frequency of the class interval. Also, there is no gap between the bars as there is no gap between the class intervals.
- Pie-chart or Pie-diagram: A pie-chart is a pictorial representation of the numerical data by non-intersecting adjacent sectors of the circle such that area of each sector is proportional to the magnitude of the data represented by the sector.
- Probability: Probability is the possibility and impossibility of an event (E).
Important Facts
- Data mostly available to us in an unorganized form is called raw data.
- In order to draw meaningful inferences from any data, we need to organise the data systematically.
- Frequency gives the number of times that a particular entry occurs.
- Raw data can be ‘grouped’ and presented systematically through ‘grouped frequency distribution’.
- Grouped data can be presented using histogram. Histogram is a type of bar diagram, where the class intervals are shown on the horizontal axis and the heights of the bars show the frequency of the class interval. Also, there is no gap between the bars as there is no gap between the class intervals.
- Data can also presented using circle graph or pie chart. A circle graph shows the relationship between a whole and its part.
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