1. Mr. B.M.Sankpal. Assistant Professor Dept.of Commerce

2. Unit -2 Measures of Central Tendency
Introduction
Objects of An Average
Requirements of a Good Average

3. Types of Average
Arithmetic Mean
Median
Quartiles
Mode

4. Weighted Arithmetic Mean
Combine Mean
Relation between Mean,Median &Mode
Exercises

5. Unit-3 DISPERSION Introduction Objects of Measuring Dispersion
Requirement of a Good Measures of Dispersion.
Range

6. Quartile Deviation
Mean Deviation
Standard Deviation
Absolute & Relative Measures of Dispersion
Merits & Demerits of Range ,Q.D.,M.D.,S.D.
Numerical Examples