Business Statistics-I

Contents

1. Frequency Distribution
1. Introduction
2. Attributes and Variables
3. Classification
3.1 Concept and Definition of Classification
3.2 Objectives of Classification
3.3 Basis of Classification
3.4 Types of Classification
4. Frequency Distribution
4.1 Methods of Classification
4.2 Different Kinds of Frequency Distributions
5. Cumulative Frequency Distribution
6. Guidelines to Prepare Frequency Distribution
7. Graphical Representation
7.1 Line Graph
7.2 Histogram
7.3 Frequency Polygon
7.4 Frequency Curve
7.5 Ogives or Cumulative Frequency Curves
8. Diagrammatic Representation
8.1 Simple Bar Diagram
8.2 Multiple Bar Diagram
8.3 Subdivided Bar Diagram
8.4 Pie Chart

2. Measure of Central Tendency
1. Introduction
2. Requisites of a Good Average
3. Arithmetic Mean or Mean
3.1 Properties
1. Effect of change of origin and scale on arithmetic mean: (Short cut method)
2. Algebraic sum of deviations of all observed values from arithmetic mean is zero
3. Minimal property of sum of squares of deviations
3.2 Merits of Mean
3.3 Demerits of Mean
3.4 Combined Mean of Two Sets of Observations
4. Median
4.1 Median for Series of Observations
4.2 Median for Interval Type Frequency Distribution
4.3 Merits of Median
4.4 Demerits of Median
5. Mode
5.1 Mode for Discrete Frequency Distribution
5.2 Mode for Continuous Frequency Distribution
5.3 Merits of Mode
5.4 Demerits of Mode
6. Empirical Relation

3. Measure of Dispersion
1. Introduction
2. Significance of Measuring Variation
3. Properties of a Good Measure of Dispersion
4. Range
4.1 Merits of Range
4.2 Demerits of Range
5. Variance and Standard Deviation
5.1 Minimal Property of Mean Square Deviation
5.2 Effect of Change of Origin and Scale on Variance
5.3 Combined Variance and Standard Deviation
5.4 Merits of Standard Deviation
5.5 Demerits of Standard Deviation
6. Relative Measures of Dispersion
6.1 Coefficient of Range
6.2 Coefficient of Variation (C.V.)