07 Sampling Slides

Non probability a sample that relies on personal

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Unformatted text preview: nclusion in the target population Sampling Techniques !   Non-probability !   A sample that relies on personal judgment in the element selection process !   Neither sampling error nor the margin of sampling error can be estimated or calculated !   Probability !   A sample in which each target population element has a known, nonzero chance of being included in the sample 2 BMKT 312 Sampling Slides 10/23/13 Non-Probability !   Convenience: Sampling on the basis of access !   Judgement: Sampling on the basis of appropriateness !   Quota: Sampling on the basis of proportions !   Snowball: Sampling on the basis of referrals Probability !   Simple Random: Equal probability of inclusion !   Systematic: Sampling every ith element !   Stratified: Simple random sampling within subsets of population !   Cluster: Sampling of subsets of population Sampling Part II: Procedure & Size 3 BMKT 312 Sampling Slides 10/23/13 Considerations !   Variation in population !   Precision desired !   Confidence !   A sampling distribution of a statistic refers to the distrib...
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