- Calculation of Range for Raw or Ungrouped Data
- Problem 1: Calculation of Range for Raw or Ungrouped Data
- Calculation of Range for Grouped Data
- Problem 1: Calculation of Range for Grouped Data

- Mean Deviation for ungrouped Data by Mean
- Problem 1: Mean Deviation for Ungroped Data by Mean
- Mean Deviation for ungrouped Data by Median
- Problem 1: Mean Deviation for Ungroped Data by Median
- Mean Deviation for ungrouped Data by Mode
- Problem 1: Mean Deviation for Ungroped Data by Mode
- Mean Deviation for Grouped Data by Mean
- Problem 1: Mean Deviation for Groped Data by Mean
- Mean Deviation for Grouped Data by Median
- Problem 1: Mean Deviation for Groped Data by Median
- Mean Deviation for Grouped Data by Mode
- Problem 1: Mean Deviation for Groped Data by Mode

- Concept of Quartile Deviation
- Problem-Concept of Quartile Deviation
- Interquartile Range for Data Set Represented in Different Ways
- More on Interquartile Range for Data Set Represented in Different Ways

- Introduction to Variance & S.D
- Problem 1: Introduction to Variance & S.D
- Calculation of Variance by Direct Method
- Problem 1: Calculation of Variance by Direct Method
- Calculation of Variance by Proper Mean formula
- Problem 1: Calculation of Variance by Proper Mean formula
- Calculation of Variance by Short Cut Method
- Problem 1: Calculation of Variance by Short Cut Method
- Calculation of S.D by Direct Method
- Problem 1: Calculation of S.D by Direct Method
- Calculation of S.D by Short Cut Method
- Problem 1: Calculation of S.D by Short Cut Method
- Calculation of S.D by Proper Mean formula
- Problem 1: Calculation of S.D by Proper Mean formula
- Effect of Change of Origin and Scale on S.D

- Coefficient of Dispersion
- Absolute and Relative Dispersion
- Coefficient of Dispersion and Its Measure
- Range Coefficient of Dispersion and its measure
- Problem-Range Coefficient of Dispersion and its measure
- Problem-Coefficient of Dispersion and Its Measure
- More on Problem-Coefficient of Dispersion and Its Measure
- Quartile Coefficient of Relative Dispresion
- More on Quartile Coefficient of Relative Dispersion
- Mean Coeffiecient of Dispersion
- More on Mean Coefficient of Dispersion

- Moment
- Introducing Moments
- More on Introducing Moments
- Problem-Introducing Moments
- More on Problem-Introducing Moments
- Problem-Moments for group data
- Problem-Moments for group data
- Prob-Relation Between Mean Moments and Raw Moments
- More on Prob-Relation Between Mean Moments and Raw Moments

- Skewness
- Skewed Vs Unskewed Curves
- More on Skewed Vs Unskewed Curves
- Measures of Skewness
- More on Measures of Skewness
- Problem-Measures of Skewness