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Sampling Design & Sampling Procedures. Chapter 12. Sampling Terminology. Sample Population Population Element Census Why Sample?. Sampling Procedure. Define Population Select a Sampling Frame Decide between Probability/Non-probability Sampling Plan Selection Procedure
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Sampling Design & Sampling Procedures Chapter 12
Sampling Terminology • Sample • Population • Population Element • Census • Why Sample?
Sampling Procedure • Define Population • Select a Sampling Frame • Decide between Probability/Non-probability Sampling • Plan Selection Procedure • Select Sampling Units • Conduct Research
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
Errors • Random Sampling Error • Systematic Error • Nonresponse Error
The Process • Decide between Probability/ Non-Probability Sampling • Probability Sampling • Nonprobability sampling
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
Probability Sampling • Simple Random Sampling • Random Numbers Table • Systematic Sampling • Periodicity • Stratified Sampling • Similar to quota samples • Cluster Sampling • Multistage Area Sampling
Internet Sampling • Advantages • Disadvantages • Web Site Visitors • Panel Samples • Recruited Ad Hoc • Opt-in Lists
Appropriate Sample Design • Degree of Accuracy • Resources • Time • Advance Knowledge of Population • National v. Local Project • Need for Statistical Analysis