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Research Methodology




18/3/2011                          1
Road map
Introduction
Sampling Terminologies
Features of a reliable sample
Steps in Conducting a Sample Survey
Sampling Techniques
Errors in Sample Surveys
Conclusion
18/3/2011                              2
introduction




18/3/2011                  3
Sampling Terminologies
Population
Sample
Sample size
Sampling Design
Sampling Unit
Sampling Frame
Saturation Point
Sampling Error

18/3/2011                            4
Features of a reliable
                     sample
Goal oriented

Accurate representative of the universe

Proportional

Random selection

Economical

Practical
  18/3/2011                                5
Steps in Conducting a Sample
                Survey

1. Objectives of the survey




2. Defining the Population to be sampled



3. Defining the Sampling Frame and Sampling Unit
   18/3/2011                                       6
Steps in Conducting a Sample
               Survey
4. Data to be collected
5. Designing the questionnaire




  18/3/2011                        7
Steps in Conducting a Sample
             Survey
6. Selection of Proper Sampling Design
7. Conducting the Fieldwork




18/3/2011                                8
Sampling Techniques




18/3/2011                         9
Probability Sampling
Simple Random Sampling
Systematic Sampling




18/3/2011                          10
Probability Sampling
Stratified Random Sampling
Cluster Sampling
Multistage Sampling




 18/3/2011                          11
Non probability sampling
Quota Sampling
Convenience Sampling




18/3/2011                          12
Non probability sampling
Judgment Sampling
Snowball Sampling




18/3/2011                     13
Errors in Sample Surveys
Sampling Error
Non Sampling Error




18/3/2011                          14
Types of Errors
Population Specification Error
Sampling Error
Selection Error
Frame Error
Non Response Error
Surrogate Information Error
Measurement Error



  18/3/2011                       15
Conclusion




     Sampling                               Error
                          Non-probability
            Probability


18/3/2011                                           16
18/3/2011   17

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Research methodology