Sampling: Basic Methods for Probability and
Non-Probability Samples

Instructor: Dr. Gary T. Henry

Description: Careful use of sampling methods can save resources and often increase the validity of evaluation findings. This seminar will focus on the following: (a) The Basics: defining sample, sampling and validity, probability and non-probability samples, and when not to sample; (b) Error and Sampling: study logic and sources of error, target population and sampling frame; (c) Probability Sampling Methods: simple random sampling, systematic sampling, stratified sampling, cluster sampling, and multi-stage sampling; (d) Making Choices before, during, and after sampling; and (e) Sampling Issues. Many examples will be used to illustrate these topics and participants will have the opportunity to work with case exercises. The instructor's text Practical Sampling (Sage, 1990) will be provided as part of the course fee in addition to take-home class work materials.

Certificates: CEP IB.d or CAEP IIB.d and CQEM III.f

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