- Class interval & Class Limits
- Construction of Continuous Frequency Table
- Problem 1: Construction of Continuous Frequency Table
- Graph of Frequency Distribution by Histogram
- Problem 1: Constructing Histogram with Equal Intervals
- Problem-Concept of Histogram

- Problem-Concept of an Average ( Arithmetic Mean )
- Problem-Solve Real Life Problems Involving Average
- Arithmetic Mean (A.M) for Ungrouped Data
- Problem 1: A.M of Ungrouped Data by Direct Method
- Concept of Weighted Mean
- Problem-Concept of Weighted Mean
- Mode for Ungrouped Discrete Data
- Problem 1: Mode for Ungrouped Discrete Data
- Median of Primary Data
- Problem-Median of Primary Data
- Real Life Problem Involving Central Tendency