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Sampling Design & Sampling Procedures Chapter 12
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Sampling Terminology Sample Population Population Element Census Why Sample?
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Sampling Procedure Define Population Select a Sampling Frame Decide between Probability/Non- probability Sampling Plan Selection Procedure Select Sampling Units Conduct Research
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The Process Defining the Target Population –Who’s the population we want to analyze? The Sampling Frame –“List of a population” –Sampling frame error –International marketing research –Sampling unit
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Errors Random Sampling Error Systematic Error Nonresponse Error
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The Process Decide between Probability/ Non-Probability Sampling –Probability Sampling –Nonprobability sampling
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Non-Probability Sampling Procedures Convenience Sampling –Mall-intercepts/ Classroom surveys Judgment Sampling –Test MKT cities Quota Sampling –Make sure groups are well-represented Snowball Sampling –Get referrals –Bias
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Probability Sampling Simple Random Sampling –Random Numbers Table –Systematic Sampling Periodicity –Stratified Sampling Similar to quota samples –Cluster Sampling –Multistage Area Sampling
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Internet Sampling Advantages Disadvantages Web Site Visitors Panel Samples Recruited Ad Hoc Opt-in Lists
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Appropriate Sample Design Degree of Accuracy Resources Time Advance Knowledge of Population National v. Local Project Need for Statistical Analysis
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