NONPROBABILITY SAMPLING Reliance on Available Subjects
Purposive or Judgmental Sampling
Snowball Sampling
Quota Sampling
Selecting Informants
THE THEORY AND LOGIC OF PROBABILITY SAMPLING Conscious and Unconscious Sampling Bias
Representativeness and Probability of Selection
Random Selection
Probability Theory, Sampling Distributions, and
Estimates of Sample Error
POPULATIONS AND SAMPLING FRAMES Review of Populations and Sampling Frames
TYPES OF SAMPLING DESIGNS Simple Random Sampling
Systematic Sampling
Stratified Sampling
Implicit Stratification in Systematic Sampling
Illustration: Sampling University Students
MULTISTAGE CLUSTER SAMPLING Multistage Designs and Sampling Error
Stratification in Multistage Cluster Sampling
Probability Proportionate to Size (PPS) Sampling
Disproportionate Sampling and Weighting
Illustration: Sampling Churchwomen
PROBABILITY SAMPLING IN REVIEW