CMST 2A03 Chapter Notes - Chapter 12: Simple Random Sample, Multistage Sampling, Sampling Frame

• School: McMaster University
• Department: Communication Studies
• Course: CMST 2A03
• Professor: Terry Flynn

Document Summary

Sampling: refers to the selection of individuals and other units of analysis for research. Element/unit: a single case in populatin, in socsci the unit is person but can be schools, nations, firm or cities. Population: all cases you want knowledge about, relative to your study. Sampling frame: list of elements from which sampling is selected. Sample: the elements selected for investigation, subset of the population, can involve probability or non probability sampling. Representative sample: one that represents essential characteristics of population, most likely selected in probability sampling. Probability sample: a sample selected using a random process such that each unit in the population has known chance of being selected, keep sample error to minimum. Non-probability sampling: a sample selected using non-random method, some units can be selected over others. Sampling error: error of estimation if theres a difference between characteristics of sample and those of the population if was selected from.