CRM 204 Lecture Notes - Lecture 4: Simple Random Sample, Nonprobability Sampling, Stratified Sampling
28 Nov 2013
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Crm 204 introduction to criminal justice research and statistics (september 26th, 2012) Smith, p. , goggin, c. , & gendereau, p. (2002). The effects of prison sentences and intermediate sanctions on recidivism: general effects and individual differences. A northern taboo: research on race, crime and criminal justice in canada. Sampling frame (researchers operationalize their population by developing aspects that closely approximates the most important elements of their population) Do the cases that were studied represent, in the aggregate, the population. Simple random sampling done with or without replacement sampling. Systematic random sampling (watch out for pre-existing order or pattern, such as alphabetical order, etc) Stratified sampling (dividing the population into subgroups, every element is applied to only one stratum) Cluster sampling / multistage cluster sampling (naturally occurring, mixed aggregate of elements in the population with each element appearing in one and only one cluster, ex: math skills) Convenience sampling (availability sampling) (take what you can get - there is no perfect.
