4.2 Meaning and Characteristics of Hypothesis
4.3 Formulation of Hypothesis
4.4 Possible Difficulties in Formulation of a Good Hypothesis
4.5 Types of Hypotheses
4.5.1 Null Hypothesis
4.5.2 Alternative Hypothesis
4.6 Errors in Testing a Hypothesis
4.7 Importance of Hypothesis Formulation
4.8 Sampling
4.8.1 Definition of Sampling
4.8.2 Sampling Terminology
4.8.3 Purpose of Sampling
4.9 Sampling Methods
4.9.1 Non Probability Sampling
4.9.2 Probability Sampling
4.10 Importance of Sampling