SAMPLING: BASIC METHODS FOR PROBABILITY AND NON-PROBABILITY SAMPLES

Instructor: Gary T. Henry (The Evaluators Institute (TEI))

Time: 8/12/2017

Description: Careful use of sampling methods can save resources and often increase the validity of evaluation findings. Hence, the course focused on the following: 1) The Basics: defining sample, sampling and validity, probability and non-probability samples, and when not to sample; 2) Error and Sampling: study logic and sources of error, target population and sampling frame; 3) Probability Sampling Methods: simple random sampling, systematic sampling, stratified sampling, cluster sampling, and multi-stage sampling; 4) Making Choices before, during, and after sampling; and 5) Power Analysis for Sample Size Determinations for Causal Inference.