Sociology 2206A/B Chapter Notes - Chapter 7: Stratified Sampling, Confidence Interval, Systematic Sampling

• School: Western University
• Department: Sociology
• Course: Sociology 2206A/B
• Professor: Stephen Lin

Document Summary

Sample: a smaller set of cases a researcher selects from a larger pool and generalizes to the population. Non-random sampling: a type of sample in which the sampling elements are selected using something other than a mathematically random process. Haphazard - get any cases in any manner that is convenient. Quota - get a pre-set number of cases in each of several predetermined categories that will reflect the diversity of the population, using haphazard methods. Purposive: get all possible cases that fit particular criteria, using various methods. Snowball - get cases using referrals from one or a few cases, and then referrals from those cases and so forth. Sequential: get cases until there is no additional information or new characteristics. Used in situations in which an expert uses judgement in selecting cases with a specific purpose in mind. Often used in exploratory research or field research.